The homology, form, and function of the microraptorine lateral pubic tubercle

Rhodes, Matthew M.; Currie, Philip J.

doi:10.1080/02724634.2019.1755866

Cited by 6 publications

(2 citation statements)

References 80 publications

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“…In some avialans 26 , the caudalmost sternal rib is the most robust and shows an expanded distal end similar to the condition in Daurlong . As in other paravians, the gastralia contact the pubis shaft in a position more proximal than in other theropods, where instead such contact is usually placed on the pubic foot 27 .…”

Section: Resultsmentioning

confidence: 87%

Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods

Wang

Cau²,

Guo

et al. 2022

Sci Rep

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Dromaeosaurids were bird-like dinosaurs with a predatory ecology known to forage on fish, mammals and other dinosaurs. We describe Daurlong wangi gen. et sp. nov., a dromaeosaurid from the Lower Cretaceous Jehol Biota of Inner Mongolia, China. Exceptional preservation in this specimen includes a large bluish layer in the abdomen which represents one of the few occurrences of intestinal remnants among non-avian dinosaurs. Phylogenetically, Daurlong nests among a lineage of short-armed Jehol Biota species closer to eudromaeosaurs than microraptorines. The topographic correspondence between the exceptionally preserved intestine in the more stem-ward Scipionyx and the remnants in the more birdlike Daurlong provides a phylogenetic framework for inferring intestine tract extent in other theropods lacking fossilized visceral tissues. Gastrointestinal organization results conservative among faunivorous dinosaurs, with the evolution of a bird-like alimentary canal restricted to avialan theropods.

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Section: Resultsmentioning

confidence: 87%

Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods

Wang

Cau²,

Guo

et al. 2022

Sci Rep

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“…The Unenlagiinae comprises all the dromaeosaurid taxa from South America (Makovicky et al, 2005). Microraptorine dinosaurs traditionally form their own clade within Dromaeosauridae (Longrich & Currie, 2009; Rhodes & Currie, 2020; Turner et al, 2012). Eudromeosauria represents derived dromaeosaurids, and these belong to three clades including Dromaeosaurinae, Saurornitholestinae and Velociraptorinae (Longrich & Currie, 2009; Powers et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Variability of bone microstructure and growth lines in the evolution of troodontids and dromaeosaurids

2023

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Since the beginning of the 1990s, palaeontologists have been interested in understanding biological processes recorded within the bone microstructure of deinonychosaurian theropods, the group comprising Troodontidae and Dromaeosauridae. Several studies were published on this subject, and the growing database requires the first revision of used terminology and older interpretations. Furthermore, a platform correlating the developmental characters of all investigated taxa is missing. Hence, we lack a perspective to evaluate the potential of deinonychosaurian osteohistology for understanding their evolution and that of their close relatives, including avialans. This study aimed to fill in this gap by offering a comprehensive review of the previous osteohistological investigations published on deinonychosaurians and Archaeopteryx. Four significant evolutionary phenomena are assumed from the investigated deinonychosaurian taxa: (1) it is likely that troodontids evolved general osteohistology closer to basal avialans than to dromaeosaurids, (2) in troodontids, reticular vasculature is correlated to maturation timing, (3) the first growth deceleration occurs later in smaller deinonychosaurs (e.g. Changyuraptor, Sinornithosaurus) than in larger forms (e.g. Buitreraptor), and (4) the growth rate of the deinonychosaurs' hind limbs might be correlated with a specific type of locomotion.

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Osteology ofUnenlagia comahuensis(Theropoda, Paraves, Unenlagiidae) from the Late Cretaceous of Patagonia

Novas

Agnolín

Motta

et al. 2021

The Anatomical Record

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Unenlagia comahuensis was originally described as a phylogenetic link between nonavian dinosaurs and birds. Later it was interpreted by some authors as belonging to the deinonychosaurian clade Dromaeosauridae, and more recently as phylogenetically closer to birds than to dromaeosaurids. The only known specimen is represented by an incomplete skeleton, including vertebrae, incomplete scapular girdle, pelvis, and limbs, coming from Upper Cretaceous beds of Neuquén province, Patagonia, Argentina. The aim of the

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The homology, form, and function of the microraptorine lateral pubic tubercle

Cited by 6 publications

References 80 publications

Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods

Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods

Variability of bone microstructure and growth lines in the evolution of troodontids and dromaeosaurids

Osteology ofUnenlagia comahuensis(Theropoda, Paraves, Unenlagiidae) from the Late Cretaceous of Patagonia

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