If this were the case, it would support the idea that non-avian theropods have relatively thinner femora than extant birds because of postural differences [6].
1	If	if	SCONJ	IN	_	5	mark	5:mark	Discourse=contingency-condition:71->72:2
2	this	this	PRON	DT	Number=Sing|PronType=Dem	5	nsubj	5:nsubj	Entity=(117-abstract-giv:act-cf1*-1-coref)
3	were	be	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	5	cop	5:cop	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	5:det	_
5	case	case	NOUN	NN	Number=Sing	9	advcl	9:advcl:if	SpaceAfter=No
6	,	,	PUNCT	,	_	5	punct	5:punct	_
7	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	9	nsubj	9:nsubj	Discourse=elaboration-additional:72->69:3|Entity=(117-abstract-giv:act-cf1*-1-ana)
8	would	would	AUX	MD	VerbForm=Fin	9	aux	9:aux	_
9	support	support	VERB	VB	VerbForm=Inf	0	root	0:root	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	11:det	Entity=(121-abstract-new-cf5-2-sgl
11	idea	idea	NOUN	NN	Number=Sing	9	obj	9:obj	_
12	that	that	SCONJ	IN	_	15	mark	15:mark	Discourse=elaboration-attribute:73->72:0
13	non-avian	non-avian	ADJ	JJ	Degree=Pos|Polarity=Neg	14	amod	14:amod	Entity=(87-animal-giv:inact-cf2-2-coref
14	theropods	theropod	NOUN	NNS	Number=Plur	15	nsubj	15:nsubj	Entity=87)
15	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	acl	11:acl:that	_
16	relatively	relatively	ADV	RB	Degree=Pos	17	advmod	17:advmod	Entity=(122-object-new-cf6-3-sgl
17	thinner	thin	ADJ	JJR	Degree=Cmp	18	amod	18:amod	_
18	femora	femora	NOUN	NN	Number=Sing	15	obj	15:obj	Entity=122)
19	than	than	ADP	IN	_	21	case	21:case	_
20	extant	extant	ADJ	JJ	Degree=Pos	21	amod	21:amod	Entity=(123-animal-new-cf7-2-sgl
21	birds	bird	NOUN	NNS	Number=Plur	15	obl	15:obl:than	Entity=123)
22	because	because	ADP	IN	_	25	case	25:case	Discourse=causal-cause:74->73:0
23	of	of	ADP	IN	_	22	fixed	22:fixed	_
24	postural	postural	ADJ	JJ	Degree=Pos	25	amod	25:amod	Entity=(90-abstract-giv:inact-cf3-2-coref
25	differences	difference	NOUN	NNS	Number=Plur	15	obl	15:obl:because_of	Entity=90)121)
26	[	[	PUNCT	-LRB-	_	27	punct	27:punct	Discourse=explanation-evidence:75->72:1|SpaceAfter=No|XML=<ref>
27	6	6	NUM	CD	NumForm=Digit|NumType=Card	15	dep	15:dep	Entity=(13-abstract-giv:inact-cf4-1-coref)|SpaceAfter=No
28	]	]	PUNCT	-RRB-	_	27	punct	27:punct	SpaceAfter=No|XML=</ref>
29	.	.	PUNCT	.	_	9	punct	9:punct	_
