Martharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.

<h4>Background</h4>The Yellow Cat Member of the Cedar Mountain Formation (Early Cretaceous, Barremian?) of Utah has yielded a rich dinosaur fauna, including the basal therizinosauroid theropod Falcarius utahensis at its base. Recent excavation uncovered a new possible therizinosauroid ta...

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Autores principales:	Phil Senter, James I Kirkland, Donald D DeBlieux
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a4ef079fc71a41759653ebd1e8c6bdc2
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spelling	oai:doaj.org-article:a4ef079fc71a41759653ebd1e8c6bdc22021-11-18T07:07:09ZMartharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.1932-620310.1371/journal.pone.0043911https://doaj.org/article/a4ef079fc71a41759653ebd1e8c6bdc22012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22952806/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>The Yellow Cat Member of the Cedar Mountain Formation (Early Cretaceous, Barremian?) of Utah has yielded a rich dinosaur fauna, including the basal therizinosauroid theropod Falcarius utahensis at its base. Recent excavation uncovered a new possible therizinosauroid taxon from a higher stratigraphic level in the Cedar Mountain Formation than F. utahensis.<h4>Methodology/principal findings</h4>Here we describe a fragmentary skeleton of the new theropod and perform a phylogenetic analysis to determine its phylogenetic position. The skeleton includes fragments of vertebrae, a scapula, forelimb and hindlimb bones, and an ischium. It also includes several well-preserved manual unguals. Manual and pedal morphology show that the specimen is distinct from other theropods from the Cedar Mountain Formation and from previously described therizinosauroids. It is here named as the holotype of a new genus and species, Martharaptor greenriverensis. Phylogenetic analysis places M. greenriverensis within Therizinosauroidea as the sister taxon to Alxasaurus + Therizinosauridae, although support for this placement is weak.<h4>Conclusions/significance</h4>The new specimen adds to the known dinosaurian fauna of the Yellow Cat Member of the Cedar Mountain Formation. If the phylogenetic placement is correct, it also adds to the known diversity of Therizinosauroidea.Phil SenterJames I KirklandDonald D DeBlieuxPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 8, p e43911 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Phil Senter James I Kirkland Donald D DeBlieux Martharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.
description	<h4>Background</h4>The Yellow Cat Member of the Cedar Mountain Formation (Early Cretaceous, Barremian?) of Utah has yielded a rich dinosaur fauna, including the basal therizinosauroid theropod Falcarius utahensis at its base. Recent excavation uncovered a new possible therizinosauroid taxon from a higher stratigraphic level in the Cedar Mountain Formation than F. utahensis.<h4>Methodology/principal findings</h4>Here we describe a fragmentary skeleton of the new theropod and perform a phylogenetic analysis to determine its phylogenetic position. The skeleton includes fragments of vertebrae, a scapula, forelimb and hindlimb bones, and an ischium. It also includes several well-preserved manual unguals. Manual and pedal morphology show that the specimen is distinct from other theropods from the Cedar Mountain Formation and from previously described therizinosauroids. It is here named as the holotype of a new genus and species, Martharaptor greenriverensis. Phylogenetic analysis places M. greenriverensis within Therizinosauroidea as the sister taxon to Alxasaurus + Therizinosauridae, although support for this placement is weak.<h4>Conclusions/significance</h4>The new specimen adds to the known dinosaurian fauna of the Yellow Cat Member of the Cedar Mountain Formation. If the phylogenetic placement is correct, it also adds to the known diversity of Therizinosauroidea.
format	article
author	Phil Senter James I Kirkland Donald D DeBlieux
author_facet	Phil Senter James I Kirkland Donald D DeBlieux
author_sort	Phil Senter
title	Martharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.
title_short	Martharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.
title_full	Martharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.
title_fullStr	Martharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.
title_full_unstemmed	Martharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.
title_sort	martharaptor greenriverensis, a new theropod dinosaur from the lower cretaceous of utah.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/a4ef079fc71a41759653ebd1e8c6bdc2
work_keys_str_mv	AT philsenter martharaptorgreenriverensisanewtheropoddinosaurfromthelowercretaceousofutah AT jamesikirkland martharaptorgreenriverensisanewtheropoddinosaurfromthelowercretaceousofutah AT donaldddeblieux martharaptorgreenriverensisanewtheropoddinosaurfromthelowercretaceousofutah
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Martharaptor greenriverensis, a new theropod dinosaur from the Lower Cretaceous of Utah.

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