A cloacal opening in a non-avian dinosaur

@article{Vinther2021ACO,
  title={A cloacal opening in a non-avian dinosaur},
  author={Jakob Vinther and Robert Nicholls and Diane A. Kelly},
  journal={Current Biology},
  year={2021},
  volume={31},
  pages={R182-R183}
}

The exquisitely preserved integument of Psittacosaurus and the scaly skin of ceratopsian dinosaurs

The Frankfurt specimen of the early-branching ceratopsian dinosaur Psittacosaurus is remarkable for the exquisite preservation of squamous (scaly) skin and other soft tissues that cover almost its

Oldest preserved umbilical scar reveals dinosaurs had ‘belly buttons’

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Morphology and distribution of scales, dermal ossifications, and other non‐feather integumentary structures in non‐avialan theropod dinosaurs

TLDR
The morphology and distribution of non-feathered integumentary structures in non-avialan theropods, covering squamous skin and naked skin as well as dermal ossifications are reviewed.

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Arich material of Crocodiles and Alligators has enabled me to clear up several points in the structure of their sexual apparatus, which have hitherto escaped notice, probably owing to the scarcity of

Evolution: One Penis After All