The postcranial skeleton of<i>Monolophosaurus jiangi</i>(Dinosauria: Theropoda) from the Middle Jurassic of Xinjiang, China, and a review of Middle Jurassic Chinese theropods

Zhao, Xiaolu; Benson, Roger B. J.; Brusatte, Stephen L.; Currie, Philip J.

doi:10.1017/s0016756809990240

Cited by 29 publications

(4 citation statements)

References 33 publications

(112 reference statements)

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“…Until this point, the large-bodied theropods of Asia have not entered into this debate, as very few large Asian theropods are known from the Early-mid Cretaceous. Prior to this gap, Asia was largely populated by endemic basal tetanuran theropods, such as Monolophosaurus and close kin (Brusatte et al in press;Zhao et al 2009). Indeed, the most recent and comprehensive phylogenetic analyses find support for at least one basal tetanuran clade restricted to the Middle Jurassic of Asia (Benson in press).…”

Section: Discussionmentioning

confidence: 99%

The osteology of Shaochilong maortuensis, a carcharodontosaurid (Dinosauria: Theropoda) from the Late Cretaceous of Asia

Brusatte¹,

Chure

Benson

et al. 2010

Zootaxa

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Large-bodied theropod dinosaurs from the Early-mid Cretaceous of the northern continents (Laurasia) are poorly known. One of the most complete and intriguing theropods from this interval is Shaochilong maortuensis Hu, 1964 from the Turonian (< 92 Ma) Ulansuhai Formation of Inner Mongolia, China. The phylogenetic placement of Shaochilong has long been a subject of debate, as it has been referred to several disparate theropod groups (e.g., Megalosauridae, Allosauridae, Tyrannosauroidea, Maniraptora). In a recent taxonomic reassessment, Shaochilong was identified as the first Asian member of Carcharodontosauridae, a clade of allosauroid theropods that was once thought to be restricted to Gondwana and includes some of the largest terrestrial predators to ever live. However, the characters supporting such a placement were only briefly discussed, and a full anatomical description of Shaochilong has yet to be presented. We provide a detailed osteological description of the lectotype and paralectotype series, show that Shaochilong is a small-bodied and short-snouted carcharodontosaurid, and highlight numerous cranial features shared with other carcharodontosaurids. We argue that the vicariant hypothesis of allosauroid biogeography, in which lineages split in concert with the fragmentation of Pangaea, is poorly supported. Finally, large-scale patterns of theropod evolution and faunal replacement are discussed, and it is argued that allosauroids persisted as large-bodied predators later in the Cretaceous than previously thought.

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Section: Discussionmentioning

confidence: 99%

The osteology of Shaochilong maortuensis, a carcharodontosaurid (Dinosauria: Theropoda) from the Late Cretaceous of Asia

Brusatte¹,

Chure

Benson

et al. 2010

Zootaxa

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“…Imperforate neural arch fossae in anterior caudals were also described from another specimen of Acrocanthosaurus [75]. Variably developed blind neural spine fossae have also been reported in Alioramus altai , Monolophosaurus and Garudimimus [72,98–100]. Differences in the development of this feature on the anterior caudals of Alioramus altai may imply ontogenetic or individual variation, consistent with apneumatic functions such as the sites of axial musculature attachments or fat deposits [72,97].…”

Section: Discussionmentioning

confidence: 89%

New theropod (Tetanurae: Avetheropoda) material from the ‘mid’-Cretaceous Griman Greek Formation at Lightning Ridge, New South Wales, Australia

Brougham

Smith²,

Bell

2019

R. Soc. open sci.

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The limited fossil record of Australian Cretaceous theropods is dominated by megaraptorids, reported from associated and isolated material from the Early Cretaceous of Victoria and the ‘Mid’-Cretaceous of central-north New South Wales and central Queensland. Here, we report on new postcranial theropod material from the early Late Cretaceous Griman Creek Formation at Lightning Ridge. Among this new material is an associated set consisting of two anterior caudal vertebrae and a pubic peduncle of the ilium, to which a morphologically similar partial vertebral centra from a separate locality is tentatively referred. These elements display a combination of characteristics that are present in megaraptorid and carcharodontosaurid theropods, including camellate internal organization of the vertebral centra, ventrally keeled anterior caudal centra and a pubic peduncle of the ilium with a ventral surface approximately twice as long anteroposteriorly as mediolaterally wide. Unfortunately, a lack of unambiguous synapomorphies precludes accurate taxonomic placement; however, avetheropodan affinities are inferred. This new material represents the second instance of a medium-sized theropod from this interval, and only the third known example of associated preservation in an Australian theropod. Additional isolated theropod material is also described, including an avetheropodan femoral head that shows similarities to Allosaurus and Australovenator , and a mid-caudal vertebral centrum bearing pneumatic foraminae and extensive camellae that is referrable to Megaraptora and represents the first axial skeletal element of a megaraptorid described from Lightning Ridge.

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“…7d) from Jiangjunmiao (Zhao and Currie, 1993). The postcranial skeleton was re-described by Zhao et al (2009). Carrano et al (2012) found it to be an early branching tetanuran.…”

Section: Theropodamentioning

confidence: 98%

The Shishugou Fauna of the Middle‐Late Jurassic Transition Period in the Junggar Basin of Western China

Clark

Eberth

et al. 2022

Acta Geologica Sinica (Eng)

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The Middle-Late Jurassic transition period is a critical period for the evolution of terrestrial vertebrates, but the global fossil record from this time is relatively poor. The Shishugou Fauna of this period has recently produced significant fossil remains of dinosaurs and other vertebrate groups, some representing the earliest known members of several dinosaurian groups and other vertebrate groups and some representing the best-known specimens of their group. These discoveries are significant for our understanding of the origin and evolution of several vertebrate lineages. Radiometric dating indicates that the fauna is aged approximately 159-164 Ma. Comparisons with other similarly-aged terrestrial faunas such as Shaximiao and Yanliao show both taxonomic similarities and differences between these faunas and indicate that the Junggar deposits might have preserved the most complete vertebrate fossil record for a Middle-Late Jurassic Laurasian terrestrial fauna.

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The postcranial skeleton ofMonolophosaurus jiangi(Dinosauria: Theropoda) from the Middle Jurassic of Xinjiang, China, and a review of Middle Jurassic Chinese theropods

Cited by 29 publications

References 33 publications

The osteology of Shaochilong maortuensis, a carcharodontosaurid (Dinosauria: Theropoda) from the Late Cretaceous of Asia

The osteology of Shaochilong maortuensis, a carcharodontosaurid (Dinosauria: Theropoda) from the Late Cretaceous of Asia

New theropod (Tetanurae: Avetheropoda) material from the ‘mid’-Cretaceous Griman Greek Formation at Lightning Ridge, New South Wales, Australia

The Shishugou Fauna of the Middle‐Late Jurassic Transition Period in the Junggar Basin of Western China

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