期刊
CRETACEOUS RESEARCH
卷 108, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cretres.2019.104337
关键词
Pneumosteum; Diagenesis; Histology; Sauropoda; Tomography
资金
- Colecionadores de Ossosrm
- Brazilian National Council for Scientific and Technological Development (CNPq) [FRB-303527/2017-0]
- Brazilian Coordination for the Improvement of Higher Education Personnel (CAPES) [001]
- Fundacao de Amparo a Pesquisa do Estado de Minas Gerais
- FAPESP [2016/20927-0, 2018/21094-7]
There is a necessity to systematically sample taxa to enlighten our knowledge on the presence of histological correlates of avian-like air sacs among dinosaurs. This work expands the studies on the occurrence of pneumosteum in sauropods to the Brazilian lithostrotian titanosaur Uberabatitan ribeiroi. This confirms previous hypotheses on the insertion of an air sacs system on titanosaurian vertebrae based on external observation and CT-scans. We also highlight that diagenesis can obliterate traces of pneumosteal bone. Caution is required to have a good understanding of the diagenetic history of the studied specimens. This could avoid false negatives, especially when sampling pneumatic histological traces in stem taxa. Additionally, we describe a new workflow for manipulating CT-scan data using open-source software. The goal is to make this technology more accessible to research groups with limited funding and potentialize the achievement of more paleontological data. (C) 2019 Elsevier Ltd. All rights reserved.
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