id	sid	tid	token	lemma	pos
iguana-17483	1	1	iguana	iguana	NOUN
iguana-17483	1	2	12.1	12.1	NUM
iguana-17483	1	3	iguana	iguana	NOUN
iguana-17483	1	4	•	•	NUM
iguana-17483	1	5	volume	volume	NOUN
iguana-17483	1	6	12	12	NUM
iguana-17483	1	7	,	,	PUNCT
iguana-17483	1	8	number	number	NOUN
iguana-17483	1	9	1	1	NUM
iguana-17483	1	10	•	•	NUM
iguana-17483	1	11	march	march	PROPN
iguana-17483	1	12	2005	2005	NUM
iguana-17483	1	13	43historical	43historical	NUM
iguana-17483	1	14	perspectives	perspective	NOUN
iguana-17483	1	15	the	the	DET
iguana-17483	1	16	rattle	rattle	NOUN
iguana-17483	1	17	of	of	ADP
iguana-17483	1	18	the	the	DET
iguana-17483	1	19	rattlesnake	rattlesnake	NOUN
iguana-17483	1	20	(	(	PUNCT
iguana-17483	1	21	all	all	DET
iguana-17483	1	22	members	member	NOUN
iguana-17483	1	23	of	of	ADP
iguana-17483	1	24	the	the	DET
iguana-17483	1	25	genera	genera	NOUN
iguana-17483	1	26	crotalus	crotalus	NOUN
iguana-17483	1	27	,	,	PUNCT
iguana-17483	1	28	with	with	ADP
iguana-17483	1	29	small	small	ADJ
iguana-17483	1	30	scales	scale	NOUN
iguana-17483	1	31	on	on	ADP
iguana-17483	1	32	the	the	DET
iguana-17483	1	33	head	head	NOUN
iguana-17483	1	34	,	,	PUNCT
iguana-17483	1	35	and	and	CCONJ
iguana-17483	1	36	sistrurus	sistrurus	NOUN
iguana-17483	1	37	,	,	PUNCT
iguana-17483	1	38	with	with	ADP
iguana-17483	1	39	large	large	ADJ
iguana-17483	1	40	plates	plate	NOUN
iguana-17483	1	41	on	on	ADP
iguana-17483	1	42	the	the	DET
iguana-17483	1	43	head	head	NOUN
iguana-17483	1	44	,	,	PUNCT
iguana-17483	1	45	are	be	AUX
iguana-17483	1	46	called	call	VERB
iguana-17483	1	47	rattlesnakes	rattlesnake	NOUN
iguana-17483	1	48	)	)	PUNCT
iguana-17483	1	49	is	be	AUX
iguana-17483	1	50	more	more	ADV
iguana-17483	1	51	or	or	CCONJ
iguana-17483	1	52	less	less	ADV
iguana-17483	1	53	familiar	familiar	ADJ
iguana-17483	1	54	to	to	ADP
iguana-17483	1	55	every	every	DET
iguana-17483	1	56	one	one	NUM
iguana-17483	1	57	.	.	PUNCT
iguana-17483	2	1	those	those	PRON
iguana-17483	2	2	who	who	PRON
iguana-17483	2	3	have	have	AUX
iguana-17483	2	4	not	not	PART
iguana-17483	2	5	seen	see	VERB
iguana-17483	2	6	or	or	CCONJ
iguana-17483	2	7	heard	hear	VERB
iguana-17483	2	8	it	it	PRON
iguana-17483	2	9	have	have	AUX
iguana-17483	2	10	surely	surely	ADV
iguana-17483	2	11	heard	hear	VERB
iguana-17483	2	12	about	about	ADP
iguana-17483	2	13	it	it	PRON
iguana-17483	2	14	.	.	PUNCT
iguana-17483	3	1	it	it	PRON
iguana-17483	3	2	seems	seem	VERB
iguana-17483	3	3	at	at	ADP
iguana-17483	3	4	first	first	ADV
iguana-17483	3	5	thought	think	VERB
iguana-17483	3	6	to	to	PART
iguana-17483	3	7	be	be	AUX
iguana-17483	3	8	one	one	NUM
iguana-17483	3	9	of	of	ADP
iguana-17483	3	10	the	the	DET
iguana-17483	3	11	most	most	ADV
iguana-17483	3	12	difficult	difficult	ADJ
iguana-17483	3	13	of	of	ADP
iguana-17483	3	14	developments	development	NOUN
iguana-17483	3	15	to	to	PART
iguana-17483	3	16	understand	understand	VERB
iguana-17483	3	17	and	and	CCONJ
iguana-17483	3	18	explain	explain	VERB
iguana-17483	3	19	.	.	PUNCT
iguana-17483	4	1	however	however	ADV
iguana-17483	4	2	,	,	PUNCT
iguana-17483	4	3	when	when	SCONJ
iguana-17483	4	4	we	we	PRON
iguana-17483	4	5	consider	consider	VERB
iguana-17483	4	6	the	the	DET
iguana-17483	4	7	habit	habit	NOUN
iguana-17483	4	8	,	,	PUNCT
iguana-17483	4	9	which	which	PRON
iguana-17483	4	10	a	a	DET
iguana-17483	4	11	vast	vast	ADJ
iguana-17483	4	12	number	number	NOUN
iguana-17483	4	13	of	of	ADP
iguana-17483	4	14	different	different	ADJ
iguana-17483	4	15	species	specie	NOUN
iguana-17483	4	16	of	of	ADP
iguana-17483	4	17	snakes	snake	NOUN
iguana-17483	4	18	have	have	VERB
iguana-17483	4	19	,	,	PUNCT
iguana-17483	4	20	of	of	ADP
iguana-17483	4	21	vibrating	vibrate	VERB
iguana-17483	4	22	the	the	DET
iguana-17483	4	23	tip	tip	NOUN
iguana-17483	4	24	of	of	ADP
iguana-17483	4	25	the	the	DET
iguana-17483	4	26	tail	tail	NOUN
iguana-17483	4	27	when	when	SCONJ
iguana-17483	4	28	they	they	PRON
iguana-17483	4	29	are	be	AUX
iguana-17483	4	30	excited	excited	ADJ
iguana-17483	4	31	,	,	PUNCT
iguana-17483	4	32	together	together	ADV
iguana-17483	4	33	with	with	ADP
iguana-17483	4	34	the	the	DET
iguana-17483	4	35	fact	fact	NOUN
iguana-17483	4	36	that	that	SCONJ
iguana-17483	4	37	the	the	DET
iguana-17483	4	38	outer	outer	ADJ
iguana-17483	4	39	horny	horny	ADJ
iguana-17483	4	40	layer	layer	NOUN
iguana-17483	4	41	of	of	ADP
iguana-17483	4	42	the	the	DET
iguana-17483	4	43	skin	skin	NOUN
iguana-17483	4	44	is	be	AUX
iguana-17483	4	45	shed	shed	VERB
iguana-17483	4	46	at	at	ADP
iguana-17483	4	47	frequent	frequent	ADJ
iguana-17483	4	48	intervals	interval	NOUN
iguana-17483	4	49	,	,	PUNCT
iguana-17483	4	50	it	it	PRON
iguana-17483	4	51	is	be	AUX
iguana-17483	4	52	not	not	PART
iguana-17483	4	53	difficult	difficult	ADJ
iguana-17483	4	54	to	to	PART
iguana-17483	4	55	look	look	VERB
iguana-17483	4	56	back	back	ADV
iguana-17483	4	57	over	over	ADP
iguana-17483	4	58	what	what	PRON
iguana-17483	4	59	have	have	AUX
iguana-17483	4	60	very	very	ADV
iguana-17483	4	61	probably	probably	ADV
iguana-17483	4	62	been	be	AUX
iguana-17483	4	63	the	the	DET
iguana-17483	4	64	steps	step	NOUN
iguana-17483	4	65	which	which	PRON
iguana-17483	4	66	led	lead	VERB
iguana-17483	4	67	to	to	ADP
iguana-17483	4	68	the	the	DET
iguana-17483	4	69	formation	formation	NOUN
iguana-17483	4	70	of	of	ADP
iguana-17483	4	71	the	the	DET
iguana-17483	4	72	rattle	rattle	NOUN
iguana-17483	4	73	.	.	PUNCT
iguana-17483	5	1	many	many	ADJ
iguana-17483	5	2	species	specie	NOUN
iguana-17483	5	3	of	of	ADP
iguana-17483	5	4	snakes	snake	NOUN
iguana-17483	5	5	,	,	PUNCT
iguana-17483	5	6	such	such	ADJ
iguana-17483	5	7	,	,	PUNCT
iguana-17483	5	8	for	for	ADP
iguana-17483	5	9	instance	instance	NOUN
iguana-17483	5	10	,	,	PUNCT
iguana-17483	5	11	as	as	SCONJ
iguana-17483	5	12	the	the	DET
iguana-17483	5	13	bushmaster	bushmaster	NOUN
iguana-17483	5	14	and	and	CCONJ
iguana-17483	5	15	the	the	DET
iguana-17483	5	16	copperhead	copperhead	NOUN
iguana-17483	5	17	,	,	PUNCT
iguana-17483	5	18	have	have	VERB
iguana-17483	5	19	a	a	DET
iguana-17483	5	20	large	large	ADJ
iguana-17483	5	21	horny	horny	NOUN
iguana-17483	5	22	spine	spine	NOUN
iguana-17483	5	23	at	at	ADP
iguana-17483	5	24	the	the	DET
iguana-17483	5	25	end	end	NOUN
iguana-17483	5	26	of	of	ADP
iguana-17483	5	27	the	the	DET
iguana-17483	5	28	tail	tail	NOUN
iguana-17483	5	29	.	.	PUNCT
iguana-17483	6	1	it	it	PRON
iguana-17483	6	2	is	be	AUX
iguana-17483	6	3	only	only	ADV
iguana-17483	6	4	necessary	necessary	ADJ
iguana-17483	6	5	to	to	PART
iguana-17483	6	6	suppose	suppose	VERB
iguana-17483	6	7	that	that	SCONJ
iguana-17483	6	8	some	some	DET
iguana-17483	6	9	ancestor	ancestor	NOUN
iguana-17483	6	10	of	of	ADP
iguana-17483	6	11	the	the	DET
iguana-17483	6	12	rattlesnake	rattlesnake	NOUN
iguana-17483	6	13	in	in	ADP
iguana-17483	6	14	the	the	DET
iguana-17483	6	15	distant	distant	ADJ
iguana-17483	6	16	past	past	NOUN
iguana-17483	6	17	had	have	VERB
iguana-17483	6	18	such	such	DET
iguana-17483	6	19	a	a	DET
iguana-17483	6	20	spine	spine	NOUN
iguana-17483	6	21	,	,	PUNCT
iguana-17483	6	22	which	which	PRON
iguana-17483	6	23	perhaps	perhaps	ADV
iguana-17483	6	24	swelled	swell	VERB
iguana-17483	6	25	into	into	ADP
iguana-17483	6	26	a	a	DET
iguana-17483	6	27	knob	knob	NOUN
iguana-17483	6	28	possessing	possess	VERB
iguana-17483	6	29	a	a	DET
iguana-17483	6	30	slight	slight	ADJ
iguana-17483	6	31	constriction	constriction	NOUN
iguana-17483	6	32	about	about	ADP
iguana-17483	6	33	its	its	PRON
iguana-17483	6	34	circumference	circumference	NOUN
iguana-17483	6	35	.	.	PUNCT
iguana-17483	7	1	now	now	ADV
iguana-17483	7	2	,	,	PUNCT
iguana-17483	7	3	since	since	SCONJ
iguana-17483	7	4	the	the	DET
iguana-17483	7	5	outer	outer	ADJ
iguana-17483	7	6	covering	covering	NOUN
iguana-17483	7	7	of	of	ADP
iguana-17483	7	8	this	this	DET
iguana-17483	7	9	terminal	terminal	ADJ
iguana-17483	7	10	scale	scale	NOUN
iguana-17483	7	11	,	,	PUNCT
iguana-17483	7	12	whatever	whatever	PRON
iguana-17483	7	13	its	its	PRON
iguana-17483	7	14	form	form	NOUN
iguana-17483	7	15	,	,	PUNCT
iguana-17483	7	16	is	be	AUX
iguana-17483	7	17	shed	shed	VERB
iguana-17483	7	18	just	just	ADV
iguana-17483	7	19	as	as	SCONJ
iguana-17483	7	20	are	be	AUX
iguana-17483	7	21	the	the	DET
iguana-17483	7	22	coverings	covering	NOUN
iguana-17483	7	23	of	of	ADP
iguana-17483	7	24	all	all	DET
iguana-17483	7	25	other	other	ADJ
iguana-17483	7	26	scales	scale	NOUN
iguana-17483	7	27	,	,	PUNCT
iguana-17483	7	28	the	the	DET
iguana-17483	7	29	constriction	constriction	NOUN
iguana-17483	7	30	allowed	allow	VERB
iguana-17483	7	31	the	the	DET
iguana-17483	7	32	shed	shed	ADJ
iguana-17483	7	33	layer	layer	NOUN
iguana-17483	7	34	to	to	PART
iguana-17483	7	35	be	be	AUX
iguana-17483	7	36	left	leave	VERB
iguana-17483	7	37	hanging	hang	VERB
iguana-17483	7	38	as	as	ADP
iguana-17483	7	39	a	a	DET
iguana-17483	7	40	dry	dry	ADJ
iguana-17483	7	41	shell	shell	NOUN
iguana-17483	7	42	upon	upon	SCONJ
iguana-17483	7	43	the	the	DET
iguana-17483	7	44	new	new	ADJ
iguana-17483	7	45	layer	layer	NOUN
iguana-17483	7	46	which	which	PRON
iguana-17483	7	47	pushed	push	VERB
iguana-17483	7	48	it	it	PRON
iguana-17483	7	49	off	off	ADP
iguana-17483	7	50	.	.	PUNCT
iguana-17483	8	1	this	this	PRON
iguana-17483	8	2	is	be	AUX
iguana-17483	8	3	indicated	indicate	VERB
iguana-17483	8	4	on	on	ADP
iguana-17483	8	5	the	the	DET
iguana-17483	8	6	diagram	diagram	NOUN
iguana-17483	8	7	(	(	PUNCT
iguana-17483	8	8	fig	fig	NOUN
iguana-17483	8	9	.	.	PUNCT
iguana-17483	9	1	38	38	NUM
iguana-17483	9	2	)	)	PUNCT
iguana-17483	9	3	.	.	PUNCT
iguana-17483	10	1	the	the	DET
iguana-17483	10	2	result	result	NOUN
iguana-17483	10	3	is	be	AUX
iguana-17483	10	4	a	a	DET
iguana-17483	10	5	string	string	NOUN
iguana-17483	10	6	of	of	ADP
iguana-17483	10	7	shed	shed	ADJ
iguana-17483	10	8	castings	casting	NOUN
iguana-17483	10	9	of	of	ADP
iguana-17483	10	10	the	the	DET
iguana-17483	10	11	terminal	terminal	ADJ
iguana-17483	10	12	spinal	spinal	NOUN
iguana-17483	10	13	button	button	NOUN
iguana-17483	10	14	,	,	PUNCT
iguana-17483	10	15	forming	form	VERB
iguana-17483	10	16	in	in	ADP
iguana-17483	10	17	the	the	DET
iguana-17483	10	18	aggregate	aggregate	NOUN
iguana-17483	10	19	the	the	DET
iguana-17483	10	20	rattle	rattle	NOUN
iguana-17483	10	21	(	(	PUNCT
iguana-17483	10	22	fig	fig	NOUN
iguana-17483	10	23	.	.	PUNCT
iguana-17483	10	24	39	39	NUM
iguana-17483	10	25	)	)	PUNCT
iguana-17483	10	26	.	.	PUNCT
iguana-17483	11	1	whenever	whenever	SCONJ
iguana-17483	11	2	this	this	PRON
iguana-17483	11	3	is	be	AUX
iguana-17483	11	4	agitated	agitated	ADJ
iguana-17483	11	5	,	,	PUNCT
iguana-17483	11	6	it	it	PRON
iguana-17483	11	7	makes	make	VERB
iguana-17483	11	8	the	the	DET
iguana-17483	11	9	familiar	familiar	ADJ
iguana-17483	11	10	half	half	NOUN
iguana-17483	11	11	metallic	metallic	ADJ
iguana-17483	11	12	,	,	PUNCT
iguana-17483	11	13	half	half	ADJ
iguana-17483	11	14	insect	insect	NOUN
iguana-17483	11	15	-	-	PUNCT
iguana-17483	11	16	like	like	ADJ
iguana-17483	11	17	sound	sound	NOUN
iguana-17483	11	18	.	.	PUNCT
iguana-17483	12	1	thus	thus	ADV
iguana-17483	12	2	,	,	PUNCT
iguana-17483	12	3	in	in	ADP
iguana-17483	12	4	a	a	DET
iguana-17483	12	5	few	few	ADJ
iguana-17483	12	6	words	word	NOUN
iguana-17483	12	7	,	,	PUNCT
iguana-17483	12	8	a	a	DET
iguana-17483	12	9	long	long	ADJ
iguana-17483	12	10	and	and	CCONJ
iguana-17483	12	11	slow	slow	ADJ
iguana-17483	12	12	process	process	NOUN
iguana-17483	12	13	may	may	AUX
iguana-17483	12	14	be	be	AUX
iguana-17483	12	15	recapitulated	recapitulate	VERB
iguana-17483	12	16	,	,	PUNCT
iguana-17483	12	17	but	but	CCONJ
iguana-17483	12	18	why	why	SCONJ
iguana-17483	12	19	,	,	PUNCT
iguana-17483	12	20	indeed	indeed	ADV
iguana-17483	12	21	,	,	PUNCT
iguana-17483	12	22	has	have	VERB
iguana-17483	12	23	the	the	DET
iguana-17483	12	24	rattle	rattle	NOUN
iguana-17483	12	25	been	be	AUX
iguana-17483	12	26	produced	produce	VERB
iguana-17483	12	27	,	,	PUNCT
iguana-17483	12	28	or	or	CCONJ
iguana-17483	12	29	why	why	SCONJ
iguana-17483	12	30	do	do	AUX
iguana-17483	12	31	snakes	snake	NOUN
iguana-17483	12	32	vibrate	vibrate	VERB
iguana-17483	12	33	their	their	PRON
iguana-17483	12	34	tails	tail	NOUN
iguana-17483	12	35	when	when	SCONJ
iguana-17483	12	36	they	they	PRON
iguana-17483	12	37	are	be	AUX
iguana-17483	12	38	frightened	frightened	ADJ
iguana-17483	12	39	or	or	CCONJ
iguana-17483	12	40	disturbed	disturbed	ADJ
iguana-17483	12	41	?	?	PUNCT
iguana-17483	13	1	we	we	PRON
iguana-17483	13	2	know	know	VERB
iguana-17483	13	3	from	from	ADP
iguana-17483	13	4	experience	experience	NOUN
iguana-17483	13	5	that	that	SCONJ
iguana-17483	13	6	species	specie	NOUN
iguana-17483	13	7	living	live	VERB
iguana-17483	13	8	among	among	ADP
iguana-17483	13	9	dry	dry	ADJ
iguana-17483	13	10	leaves	leave	NOUN
iguana-17483	13	11	make	make	VERB
iguana-17483	13	12	a	a	DET
iguana-17483	13	13	considerable	considerable	ADJ
iguana-17483	13	14	noise	noise	NOUN
iguana-17483	13	15	in	in	ADP
iguana-17483	13	16	this	this	DET
iguana-17483	13	17	way	way	NOUN
iguana-17483	13	18	,	,	PUNCT
iguana-17483	13	19	but	but	CCONJ
iguana-17483	13	20	the	the	DET
iguana-17483	13	21	rattlesnake	rattlesnake	NOUN
iguana-17483	13	22	,	,	PUNCT
iguana-17483	13	23	living	live	VERB
iguana-17483	13	24	in	in	ADP
iguana-17483	13	25	the	the	DET
iguana-17483	13	26	open	open	ADJ
iguana-17483	13	27	grassy	grassy	ADJ
iguana-17483	13	28	plains	plain	NOUN
iguana-17483	13	29	,	,	PUNCT
iguana-17483	13	30	would	would	AUX
iguana-17483	13	31	not	not	PART
iguana-17483	13	32	do	do	VERB
iguana-17483	13	33	so	so	ADV
iguana-17483	13	34	.	.	PUNCT
iguana-17483	14	1	surely	surely	ADV
iguana-17483	14	2	,	,	PUNCT
iguana-17483	14	3	the	the	DET
iguana-17483	14	4	rattle	rattle	NOUN
iguana-17483	14	5	is	be	AUX
iguana-17483	14	6	not	not	PART
iguana-17483	14	7	needed	need	VERB
iguana-17483	14	8	to	to	PART
iguana-17483	14	9	warn	warn	VERB
iguana-17483	14	10	away	away	ADP
iguana-17483	14	11	the	the	DET
iguana-17483	14	12	snake	snake	NOUN
iguana-17483	14	13	’s	’s	PART
iguana-17483	14	14	prey	prey	NOUN
iguana-17483	14	15	.	.	PUNCT
iguana-17483	15	1	no	no	DET
iguana-17483	15	2	such	such	ADJ
iguana-17483	15	3	altruism	altruism	NOUN
iguana-17483	15	4	need	need	AUX
iguana-17483	15	5	be	be	AUX
iguana-17483	15	6	considered	consider	VERB
iguana-17483	15	7	.	.	PUNCT
iguana-17483	16	1	the	the	DET
iguana-17483	16	2	rattler	rattler	NOUN
iguana-17483	16	3	lies	lie	VERB
iguana-17483	16	4	in	in	ADP
iguana-17483	16	5	wait	wait	NOUN
iguana-17483	16	6	,	,	PUNCT
iguana-17483	16	7	striking	strike	VERB
iguana-17483	16	8	the	the	DET
iguana-17483	16	9	rabbit	rabbit	NOUN
iguana-17483	16	10	or	or	CCONJ
iguana-17483	16	11	bird	bird	NOUN
iguana-17483	16	12	upon	upon	SCONJ
iguana-17483	16	13	which	which	PRON
iguana-17483	16	14	it	it	PRON
iguana-17483	16	15	feeds	feed	VERB
iguana-17483	16	16	,	,	PUNCT
iguana-17483	16	17	then	then	ADV
iguana-17483	16	18	withdraws	withdraw	VERB
iguana-17483	16	19	without	without	ADP
iguana-17483	16	20	rattling	rattle	VERB
iguana-17483	16	21	,	,	PUNCT
iguana-17483	16	22	to	to	PART
iguana-17483	16	23	wait	wait	VERB
iguana-17483	16	24	for	for	SCONJ
iguana-17483	16	25	the	the	DET
iguana-17483	16	26	prey	prey	NOUN
iguana-17483	16	27	to	to	PART
iguana-17483	16	28	die	die	VERB
iguana-17483	16	29	.	.	PUNCT
iguana-17483	17	1	at	at	ADP
iguana-17483	17	2	first	first	ADJ
iguana-17483	17	3	sight	sight	NOUN
iguana-17483	17	4	,	,	PUNCT
iguana-17483	17	5	man	man	NOUN
iguana-17483	17	6	seems	seem	VERB
iguana-17483	17	7	to	to	PART
iguana-17483	17	8	be	be	AUX
iguana-17483	17	9	the	the	DET
iguana-17483	17	10	snake	snake	NOUN
iguana-17483	17	11	’s	’s	PART
iguana-17483	17	12	only	only	ADJ
iguana-17483	17	13	enemy	enemy	NOUN
iguana-17483	17	14	,	,	PUNCT
iguana-17483	17	15	but	but	CCONJ
iguana-17483	17	16	the	the	DET
iguana-17483	17	17	rattler	rattler	NOUN
iguana-17483	17	18	is	be	AUX
iguana-17483	17	19	,	,	PUNCT
iguana-17483	17	20	of	of	ADP
iguana-17483	17	21	course	course	NOUN
iguana-17483	17	22	,	,	PUNCT
iguana-17483	17	23	far	far	ADV
iguana-17483	17	24	older	old	ADJ
iguana-17483	17	25	than	than	ADP
iguana-17483	17	26	man	man	NOUN
iguana-17483	17	27	on	on	ADP
iguana-17483	17	28	this	this	DET
iguana-17483	17	29	continent	continent	NOUN
iguana-17483	17	30	.	.	PUNCT
iguana-17483	18	1	what	what	PRON
iguana-17483	18	2	native	native	ADJ
iguana-17483	18	3	animal	animal	NOUN
iguana-17483	18	4	,	,	PUNCT
iguana-17483	18	5	then	then	ADV
iguana-17483	18	6	,	,	PUNCT
iguana-17483	18	7	had	have	VERB
iguana-17483	18	8	the	the	DET
iguana-17483	18	9	rattlesnake	rattlesnake	NOUN
iguana-17483	18	10	to	to	PART
iguana-17483	18	11	fear	fear	VERB
iguana-17483	18	12	on	on	ADP
iguana-17483	18	13	a	a	DET
iguana-17483	18	14	wholesale	wholesale	ADJ
iguana-17483	18	15	scale	scale	NOUN
iguana-17483	18	16	,	,	PUNCT
iguana-17483	18	17	which	which	PRON
iguana-17483	18	18	coincided	coincide	VERB
iguana-17483	18	19	in	in	ADP
iguana-17483	18	20	its	its	PRON
iguana-17483	18	21	distribution	distribution	NOUN
iguana-17483	18	22	with	with	ADP
iguana-17483	18	23	the	the	DET
iguana-17483	18	24	area	area	NOUN
iguana-17483	18	25	where	where	SCONJ
iguana-17483	18	26	these	these	DET
iguana-17483	18	27	snakes	snake	NOUN
iguana-17483	18	28	may	may	AUX
iguana-17483	18	29	conceivably	conceivably	ADV
iguana-17483	18	30	have	have	AUX
iguana-17483	18	31	been	be	AUX
iguana-17483	18	32	evolved	evolve	VERB
iguana-17483	18	33	?	?	PUNCT
iguana-17483	19	1	ancestors	ancestor	NOUN
iguana-17483	19	2	of	of	ADP
iguana-17483	19	3	the	the	DET
iguana-17483	19	4	wide	wide	ADV
iguana-17483	19	5	-	-	PUNCT
iguana-17483	19	6	ranging	range	VERB
iguana-17483	19	7	bison	bison	NOUN
iguana-17483	19	8	fulfill	fulfill	VERB
iguana-17483	19	9	these	these	DET
iguana-17483	19	10	conditions	condition	NOUN
iguana-17483	19	11	,	,	PUNCT
iguana-17483	19	12	and	and	CCONJ
iguana-17483	19	13	we	we	PRON
iguana-17483	19	14	know	know	VERB
iguana-17483	19	15	that	that	SCONJ
iguana-17483	19	16	there	there	PRON
iguana-17483	19	17	were	be	VERB
iguana-17483	19	18	earlier	early	ADJ
iguana-17483	19	19	bisons	bison	NOUN
iguana-17483	19	20	,	,	PUNCT
iguana-17483	19	21	for	for	SCONJ
iguana-17483	19	22	their	their	PRON
iguana-17483	19	23	fossil	fossil	NOUN
iguana-17483	19	24	remains	remain	NOUN
iguana-17483	19	25	have	have	AUX
iguana-17483	19	26	been	be	AUX
iguana-17483	19	27	found	find	VERB
iguana-17483	19	28	.	.	PUNCT
iguana-17483	20	1	they	they	PRON
iguana-17483	20	2	were	be	AUX
iguana-17483	20	3	probably	probably	ADV
iguana-17483	20	4	widespread	widespread	ADJ
iguana-17483	20	5	also	also	ADV
iguana-17483	20	6	,	,	PUNCT
iguana-17483	20	7	for	for	SCONJ
iguana-17483	20	8	the	the	DET
iguana-17483	20	9	remains	remain	NOUN
iguana-17483	20	10	occur	occur	VERB
iguana-17483	20	11	in	in	ADP
iguana-17483	20	12	michigan	michigan	PROPN
iguana-17483	20	13	,	,	PUNCT
iguana-17483	20	14	kentucky	kentucky	PROPN
iguana-17483	20	15	,	,	PUNCT
iguana-17483	20	16	and	and	CCONJ
iguana-17483	20	17	many	many	ADJ
iguana-17483	20	18	other	other	ADJ
iguana-17483	20	19	states	state	NOUN
iguana-17483	20	20	.	.	PUNCT
iguana-17483	21	1	the	the	DET
iguana-17483	21	2	hoofs	hoof	NOUN
iguana-17483	21	3	of	of	ADP
iguana-17483	21	4	these	these	DET
iguana-17483	21	5	ponderous	ponderous	ADJ
iguana-17483	21	6	animals	animal	NOUN
iguana-17483	21	7	,	,	PUNCT
iguana-17483	21	8	traveling	travel	VERB
iguana-17483	21	9	over	over	ADP
iguana-17483	21	10	the	the	DET
iguana-17483	21	11	plains	plain	NOUN
iguana-17483	21	12	,	,	PUNCT
iguana-17483	21	13	must	must	AUX
iguana-17483	21	14	have	have	AUX
iguana-17483	21	15	been	be	AUX
iguana-17483	21	16	distinctly	distinctly	ADV
iguana-17483	21	17	dangerous	dangerous	ADJ
iguana-17483	21	18	to	to	ADP
iguana-17483	21	19	snakes	snake	NOUN
iguana-17483	21	20	living	live	VERB
iguana-17483	21	21	in	in	ADP
iguana-17483	21	22	the	the	DET
iguana-17483	21	23	open	open	NOUN
iguana-17483	21	24	,	,	PUNCT
iguana-17483	21	25	while	while	SCONJ
iguana-17483	21	26	the	the	DET
iguana-17483	21	27	snake	snake	NOUN
iguana-17483	21	28	’s	’s	PART
iguana-17483	21	29	bite	bite	NOUN
iguana-17483	21	30	would	would	AUX
iguana-17483	21	31	be	be	AUX
iguana-17483	21	32	distinctly	distinctly	ADV
iguana-17483	21	33	unpleasant	unpleasant	ADJ
iguana-17483	21	34	to	to	ADP
iguana-17483	21	35	the	the	DET
iguana-17483	21	36	bison	bison	NOUN
iguana-17483	21	37	,	,	PUNCT
iguana-17483	21	38	although	although	SCONJ
iguana-17483	21	39	death	death	NOUN
iguana-17483	21	40	would	would	AUX
iguana-17483	21	41	probably	probably	ADV
iguana-17483	21	42	have	have	AUX
iguana-17483	21	43	rarely	rarely	ADV
iguana-17483	21	44	ensued	ensue	VERB
iguana-17483	21	45	.	.	PUNCT
iguana-17483	22	1	the	the	DET
iguana-17483	22	2	bison	bison	NOUN
iguana-17483	22	3	would	would	AUX
iguana-17483	22	4	gladly	gladly	ADV
iguana-17483	22	5	keep	keep	VERB
iguana-17483	22	6	out	out	ADP
iguana-17483	22	7	of	of	ADP
iguana-17483	22	8	the	the	DET
iguana-17483	22	9	snake	snake	NOUN
iguana-17483	22	10	’s	’s	PART
iguana-17483	22	11	way	way	NOUN
iguana-17483	22	12	if	if	SCONJ
iguana-17483	22	13	warned	warn	VERB
iguana-17483	22	14	,	,	PUNCT
iguana-17483	22	15	and	and	CCONJ
iguana-17483	22	16	this	this	DET
iguana-17483	22	17	warning	warning	NOUN
iguana-17483	22	18	the	the	DET
iguana-17483	22	19	rattle	rattle	NOUN
iguana-17483	22	20	gave	give	VERB
iguana-17483	22	21	.	.	PUNCT
iguana-17483	23	1	it	it	PRON
iguana-17483	23	2	has	have	AUX
iguana-17483	23	3	been	be	AUX
iguana-17483	23	4	suggested	suggest	VERB
iguana-17483	23	5	that	that	SCONJ
iguana-17483	23	6	the	the	DET
iguana-17483	23	7	rattle	rattle	NOUN
iguana-17483	23	8	served	serve	VERB
iguana-17483	23	9	some	some	DET
iguana-17483	23	10	purpose	purpose	NOUN
iguana-17483	23	11	for	for	ADP
iguana-17483	23	12	signaling	signal	VERB
iguana-17483	23	13	between	between	ADP
iguana-17483	23	14	the	the	DET
iguana-17483	23	15	snakes	snake	NOUN
iguana-17483	23	16	,	,	PUNCT
iguana-17483	23	17	perhaps	perhaps	ADV
iguana-17483	23	18	a	a	DET
iguana-17483	23	19	mating	mating	NOUN
iguana-17483	23	20	call	call	NOUN
iguana-17483	23	21	or	or	CCONJ
iguana-17483	23	22	an	an	DET
iguana-17483	23	23	assembly	assembly	NOUN
iguana-17483	23	24	call	call	NOUN
iguana-17483	23	25	for	for	ADP
iguana-17483	23	26	group	group	NOUN
iguana-17483	23	27	hibernation	hibernation	NOUN
iguana-17483	23	28	.	.	PUNCT
iguana-17483	24	1	this	this	PRON
iguana-17483	24	2	is	be	AUX
iguana-17483	24	3	not	not	PART
iguana-17483	24	4	a	a	DET
iguana-17483	24	5	fact	fact	NOUN
iguana-17483	24	6	.	.	PUNCT
iguana-17483	25	1	in	in	ADP
iguana-17483	25	2	the	the	DET
iguana-17483	25	3	first	first	ADJ
iguana-17483	25	4	place	place	NOUN
iguana-17483	25	5	,	,	PUNCT
iguana-17483	25	6	abundant	abundant	ADJ
iguana-17483	25	7	opportunity	opportunity	NOUN
iguana-17483	25	8	for	for	ADP
iguana-17483	25	9	observation	observation	NOUN
iguana-17483	25	10	has	have	AUX
iguana-17483	25	11	never	never	ADV
iguana-17483	25	12	shown	show	VERB
iguana-17483	25	13	it	it	PRON
iguana-17483	25	14	to	to	PART
iguana-17483	25	15	serve	serve	VERB
iguana-17483	25	16	such	such	DET
iguana-17483	25	17	a	a	DET
iguana-17483	25	18	function	function	NOUN
iguana-17483	25	19	;	;	PUNCT
iguana-17483	25	20	and	and	CCONJ
iguana-17483	25	21	,	,	PUNCT
iguana-17483	25	22	again	again	ADV
iguana-17483	25	23	,	,	PUNCT
iguana-17483	25	24	recent	recent	ADJ
iguana-17483	25	25	experiments	experiment	NOUN
iguana-17483	25	26	have	have	AUX
iguana-17483	25	27	shown	show	VERB
iguana-17483	25	28	that	that	SCONJ
iguana-17483	25	29	the	the	DET
iguana-17483	25	30	rattlesnake	rattlesnake	NOUN
iguana-17483	25	31	’s	’s	PART
iguana-17483	25	32	hearing	hearing	NOUN
iguana-17483	25	33	is	be	AUX
iguana-17483	25	34	confined	confine	VERB
iguana-17483	25	35	to	to	ADP
iguana-17483	25	36	a	a	DET
iguana-17483	25	37	range	range	NOUN
iguana-17483	25	38	of	of	ADP
iguana-17483	25	39	sounds	sound	NOUN
iguana-17483	25	40	of	of	ADP
iguana-17483	25	41	wave	wave	NOUN
iguana-17483	25	42	length	length	NOUN
iguana-17483	25	43	far	far	ADV
iguana-17483	25	44	different	different	ADJ
iguana-17483	25	45	from	from	ADP
iguana-17483	25	46	that	that	PRON
iguana-17483	25	47	of	of	ADP
iguana-17483	25	48	the	the	DET
iguana-17483	25	49	rattle	rattle	NOUN
iguana-17483	25	50	.	.	PUNCT
iguana-17483	26	1	thus	thus	ADV
iguana-17483	26	2	the	the	DET
iguana-17483	26	3	snake	snake	NOUN
iguana-17483	26	4	is	be	AUX
iguana-17483	26	5	deaf	deaf	ADJ
iguana-17483	26	6	to	to	ADP
iguana-17483	26	7	the	the	DET
iguana-17483	26	8	noise	noise	NOUN
iguana-17483	26	9	of	of	ADP
iguana-17483	26	10	its	its	PRON
iguana-17483	26	11	rattle	rattle	NOUN
iguana-17483	26	12	.	.	PUNCT
iguana-17483	27	1	h	h	NOUN
iguana-17483	28	1	i	i	PRON
iguana-17483	28	2	s	s	VERB
iguana-17483	28	3	t	t	X
iguana-17483	28	4	o	o	NOUN
iguana-17483	29	1	r	r	NOUN
iguana-17483	29	2	i	i	NOUN
iguana-17483	29	3	c	c	VERB
iguana-17483	29	4	a	a	DET
iguana-17483	29	5	l	l	NOUN
iguana-17483	30	1	p	p	X
iguana-17483	30	2	e	e	X
iguana-17483	30	3	r	r	NOUN
iguana-17483	30	4	s	s	NUM
iguana-17483	30	5	e	e	X
iguana-17483	30	6	c	c	PROPN
iguana-17483	30	7	t	t	PROPN
iguana-17483	30	8	i	i	PRON
iguana-17483	30	9	v	v	NUM
iguana-17483	30	10	e	e	X
iguana-17483	30	11	s	s	NOUN
iguana-17483	30	12	fig	fig	NOUN
iguana-17483	30	13	.	.	PUNCT
iguana-17483	31	1	38	38	NUM
iguana-17483	31	2	.	.	PUNCT
iguana-17483	32	1	tips	tip	NOUN
iguana-17483	32	2	of	of	ADP
iguana-17483	32	3	the	the	DET
iguana-17483	32	4	tails	tail	NOUN
iguana-17483	32	5	of	of	ADP
iguana-17483	32	6	snakes	snake	NOUN
iguana-17483	32	7	upper	upper	ADJ
iguana-17483	32	8	two	two	NUM
iguana-17483	32	9	,	,	PUNCT
iguana-17483	32	10	non	non	ADJ
iguana-17483	32	11	-	-	ADJ
iguana-17483	32	12	rattling	rattling	ADJ
iguana-17483	32	13	vipers	viper	NOUN
iguana-17483	32	14	;	;	PUNCT
iguana-17483	32	15	lower	low	ADJ
iguana-17483	32	16	four	four	NUM
iguana-17483	32	17	showing	show	VERB
iguana-17483	32	18	rattle	rattle	NOUN
iguana-17483	32	19	during	during	ADP
iguana-17483	32	20	growth	growth	NOUN
iguana-17483	32	21	,	,	PUNCT
iguana-17483	32	22	lowest	low	ADJ
iguana-17483	32	23	in	in	ADP
iguana-17483	32	24	cross	cross	NOUN
iguana-17483	32	25	section	section	NOUN
iguana-17483	32	26	.	.	PUNCT
iguana-17483	33	1	fig	fig	NOUN
iguana-17483	33	2	.	.	PUNCT
iguana-17483	34	1	39	39	NUM
iguana-17483	34	2	.	.	PUNCT
iguana-17483	35	1	the	the	DET
iguana-17483	35	2	rattle	rattle	NOUN
iguana-17483	35	3	of	of	ADP
iguana-17483	35	4	the	the	DET
iguana-17483	35	5	rattlesnake	rattlesnake	NOUN
iguana-17483	35	6	in	in	ADP
iguana-17483	35	7	life	life	NOUN
iguana-17483	35	8	a	a	DET
iguana-17483	35	9	neotropical	neotropical	ADJ
iguana-17483	35	10	rattlesnake	rattlesnake	NOUN
iguana-17483	35	11	(	(	PUNCT
iguana-17483	35	12	crotalus	crotalus	ADJ
iguana-17483	35	13	durissus	durissus	NOUN
iguana-17483	35	14	)	)	PUNCT
iguana-17483	35	15	from	from	ADP
iguana-17483	35	16	querétaro	querétaro	ADJ
iguana-17483	35	17	,	,	PUNCT
iguana-17483	35	18	méxico	méxico	PROPN
iguana-17483	35	19	in	in	ADP
iguana-17483	35	20	defensive	defensive	ADJ
iguana-17483	35	21	posture	posture	NOUN
iguana-17483	35	22	.	.	PUNCT
iguana-17483	36	1	photograph	photograph	NOUN
iguana-17483	36	2	by	by	ADP
iguana-17483	36	3	louis	louis	PROPN
iguana-17483	36	4	porras	porras	PROPN
iguana-17483	36	5	.	.	PUNCT
iguana-17483	37	1	protective	protective	ADJ
iguana-17483	37	2	devices	device	NOUN
iguana-17483	37	3	of	of	ADP
iguana-17483	37	4	snakes	snake	NOUN
iguana-17483	37	5	:	:	PUNCT
iguana-17483	37	6	rattlesnakes1	rattlesnakes1	PROPN
iguana-17483	37	7	thomas	thomas	PROPN
iguana-17483	37	8	barbour	barbour	PROPN
iguana-17483	37	9	1	1	NUM
iguana-17483	37	10	excerpted	excerpt	VERB
iguana-17483	37	11	from	from	ADP
iguana-17483	37	12	barbour	barbour	PROPN
iguana-17483	37	13	,	,	PUNCT
iguana-17483	37	14	t.	t.	PROPN
iguana-17483	37	15	1926	1926	NUM
iguana-17483	37	16	.	.	PUNCT
iguana-17483	38	1	reptiles	reptile	NOUN
iguana-17483	38	2	and	and	CCONJ
iguana-17483	38	3	amphibians	amphibian	NOUN
iguana-17483	38	4	.	.	PUNCT
iguana-17483	39	1	their	their	PRON
iguana-17483	39	2	habits	habit	NOUN
iguana-17483	39	3	and	and	CCONJ
iguana-17483	39	4	adaptations	adaptation	NOUN
iguana-17483	39	5	.	.	PUNCT
iguana-17483	40	1	houghton	houghton	PROPN
iguana-17483	40	2	mifflin	mifflin	PROPN
iguana-17483	40	3	company	company	PROPN
iguana-17483	40	4	,	,	PUNCT
iguana-17483	40	5	boston	boston	PROPN
iguana-17483	40	6	and	and	CCONJ
iguana-17483	40	7	new	new	PROPN
iguana-17483	40	8	york	york	PROPN
iguana-17483	40	9	.	.	PUNCT
iguana-17483	41	1	pages	page	NOUN
iguana-17483	41	2	from	from	ADP
iguana-17483	41	3	vol12no1-12.pdf	vol12no1-12.pdf	NOUN
iguana-17483	41	4	pages	page	NOUN
iguana-17483	41	5	from	from	ADP
iguana-17483	41	6	vol12no1-11.pdf	vol12no1-11.pdf	ADJ
iguana-17483	41	7	pages	page	NOUN
iguana-17483	41	8	from	from	ADP
iguana-17483	41	9	vol12no1-10.pdf	vol12no1-10.pdf	NOUN