Results 61 to 70 of about 1,610 (221)
The Anatomical Record, EarlyView.Abstract Triassic pseudosuchians had highly diversified cranial morphologies. These archosaurs occupied diverse ecological roles, ranging from terrestrial predators and herbivores to semiaquatic ambush predators and possible waders. Here, we apply linear cranial morphometrics to assess possible convergences with other sauropsids from the clades ...
Rafael Terras +3 more
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Fig. 2 in Osteology Of Khaan Mckennai (Oviraptorosauria: Theropoda)
, 2012 Fig. 2. Khaan mckennai (IGM 100/1002, referred specimen).Published as part of Balanoff, Amy M. & Norell, Mark A., 2012, Osteology Of Khaan Mckennai (Oviraptorosauria: Theropoda), pp.
Balanoff, Amy M., Norell, Mark A.
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Unenlagiid theropods: are they members of the Dromaeosauridae (Theropoda, Maniraptora)? [PDF]
Anais da Academia Brasileira de Ciências, 2011 In the present paper we analyze the phylogenetic position of the derived Gondwanan theropod clade Unenlagiidae. Although this group has been frequently considered as deeply nested within Deinonychosauria and Dromaeosauridae, most of the features supporting this interpretation are conflictive, at least.
Agnolin, Federico L., Novas, Fernando E.
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Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade
Biological Reviews, EarlyView.ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan +2 more
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A new oviraptorid (Dinosauria: Theropoda) from the Upper Cretaceous of southern China
, 2013 Wang, Shuo, Sun, Chengkai, Sullivan, Corwin, Xu, Xing (2013): A new oviraptorid (Dinosauria: Theropoda) from the Upper Cretaceous of southern China. Zootaxa 3640 (2): 242-257, DOI: 10.11646/zootaxa.3640.2.
Wang, Shuo +3 more
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, 1983 The morphology of theropod locomotion can be derived from that of pseudosuchians. The change from a facultative biped (thecodont) to an obligate theropod biped is understandable in terms of efficiency. Bipedal locomotion is more energy efficient than is a reptilian method of quad rupedal locomotion (Hotton 1980).
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Journal of Anatomy, EarlyView.Here, we present novel CT scan data of caudal vertebrae of six Middle–Late Jurassic sauropods, representing several eusauropod lineages. We synthesise these new data with a comprehensive critical appraisal of purported external and internal evidence for caudal vertebral PSP in Sauropodomorpha.
Samantha L. Beeston +5 more
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Cranial osteology of Haplocheirus sollers Choiniere et al., 2010 (Theropoda: Alvarezsauroidea)
, 2014 Choiniere, Jonah N., Clark, James M., Norell, Mark A., Xu, Xing (2014): Cranial osteology of Haplocheirus sollers Choiniere et al., 2010 (Theropoda: Alvarezsauroidea).
Choiniere, Jonah N. +3 more
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FIGURE 35 in Anatomy of Mahakala omnogovae (Theropoda: Dromaeosauridae), Tögrögiin Shiree, Mongolia [PDF]
, 2011 FIGURE 35. Left digit III pedal phalanges of Mahakala omnogovae (IGM 100/1033), prior to full preparation of the left tibia and metatarsus.Published as part of Turner, Alan H., Pol, Diego & Norell, Mark A., 2011, Anatomy of Mahakala omnogovae (Theropoda:
Turner, Alan Hamilton +3 more
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The pectoralis muscle orientation as an indicator of the modes of wing‐propelled locomotion in birds
Journal of Anatomy, EarlyView.The pectoralis orientation of birds was consistent with the orientation of the aerodynamic force acting on the wing, varying by wing‐propelled locomotion (WPL) mode. The skeletal morphology unique to each WPL mode, related to the origin/insertion of the pectoralis, may be associated with these functional demands of pectoralis orientation.
Takumi Akeda, Shin‐ichi Fujiwara
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