DOAJ Open Access 2020

Comparative bone microstructure of three archosauromorphs from the Carnian, Late Triassic Chañares Formation of Argentina

Jordi Alexis Garcia Marsà Federico L. Agnolín Fernando E. Novas

Abstrak

The Chañares Formation exhibits one of the most important archosauriform records of early Carnian ecosystems. Here we present new data on the palaeohistology of Chañares archosauriforms and provide new insights into their paleobiology, as well as possible phylogenetically informative traits. Bone microstructure of Lagerpeton chanarensis and Tropidosuchus romeri is dominated by fibro-lamellar tissue and dense vascularization. On the other hand, Chanaresuchus bonapartei is more densely vascularized, but with cyclical growth characterized by alternate fibro-lamellar, parallel-fibered and lamellar-zonal tissues. Dense vascularization and fibro-lamellar tissue imply fast growth and high metabolic rates for all these taxa. These histological traits may be tentatively interpreted as a possible adaptative advantage in front of Chañares Formation environmental conditions.

Topik & Kata Kunci

Fossil man. Human paleontology Paleontology

Penulis (3)

Jordi Alexis Garcia Marsà

Federico L. Agnolín

Fernando E. Novas

Format Sitasi

APA MLA BibTeX

Marsà, J.A.G., Agnolín, F.L., Novas, F.E. (2020). Comparative bone microstructure of three archosauromorphs from the Carnian, Late Triassic Chañares Formation of Argentina. https://doi.org/10.4202/app.00644.2019

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Informasi Jurnal

Tahun Terbit: 2020
Sumber Database: DOAJ
DOI: 10.4202/app.00644.2019
Akses: Open Access ✓