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Sauropod tumors + Ornithomimus "collagen fibers"



Ben Creisler
bcreisler@gmail.com


Two new papers:

Fernando Henrique de Souza Barbosa, Paulo Victor Luiz Gomes da Costa
Pereira, Lílian Paglarelli Bergqvist & Bruce M. Rothschild (2016)
Multiple neoplasms in a single sauropod dinosaur from the Upper
Cretaceous of Brazil.
Cretaceous Research 62: 13–17
doi:10.1016/j.cretres.2016.01.010
http: // www.sciencedirect.com/science/article/pii/S0195667116300106

Highlights

The first case of documented neoplasia in a non-hadrosaur dinosaur.
Two different types of neoplasia in a single vertebra of a
titanosaurid dinosaur from Upper Cretaceous of Brazil.
This is the first histologically verified diagnosis of an osteoma in
the dinosaur record.

Abstract

Tumors are thought rare in dinosaurs, previously limited in
distribution to a single family – hadrosaurs. Here we recognized two
different neoplastic lesions, osteoma and hemangioma, in a single
caudal vertebra of a titanosaur dinosaur from the Upper Cretaceous of
Brazil, diagnosed on the basis of macroscopic, radiological and
histological analysis. This is the first occurrence of neoplasia in a
non-hadrosaur dinosaur. Therefore, neoplasia is not restricted to
hadrosaur dinosaurs, as previously suggested.


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Theagarten Lingham-Soliar (2016)
A densely feathered ornithomimid (Dinosauria: Theropoda) from the
Upper Cretaceous Dinosaur Park Formation, Alberta, Canada: A comment.
Cretaceous Research (advance online publication)
doi:10.1016/j.cretres.2015.12.001
http: // www.sciencedirect.com/science/article/pii/S0195667115301282

The presence of feathers in Ornithomimus is questioned on poor
evidence and a failure to observe scientific process and procedure.