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Osteohistology of the silesaurid Sacisaurus agudoensis from southern Brazil (Late Triassic) and implications for growth in early dinosaurs

Published on Jan 1, 2019in Anais Da Academia Brasileira De Ciencias0.938
· DOI :10.1590/0001-3765201920180643
Fábio Hiratsuka Veiga1
Estimated H-index: 1
(UFRGS: Universidade Federal do Rio Grande do Sul),
Jennifer Botha-Brink16
Estimated H-index: 16
(University of the Free State)
+ 2 AuthorsMarina Bento Soares14
Estimated H-index: 14
(UFRGS: Universidade Federal do Rio Grande do Sul)
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Sauropod bone histology has provided a great deal of insight into the life history of these enormous animals. However, because of high growth rates, annual growth rings are not common in sauropod long bones, so directly measuring growth rates and determining sexual maturity require alternative measures. Histological ontogenetic stages (HOS) have been established to describe the changes in bone histology through development for basal Macronaria and Diplodocoidea, and subsequently for Titanosauria...
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The early evolution of archosauromorphs during the Permo-Triassic constitutes an excellent empirical case study to shed light on evolutionary radiations in deep time and the timing and processes of recovery of terrestrial faunas after a mass extinction. However, macroevolutionary studies of early archosauromorphs are currently limited by poor knowledge of their phylogenetic relationships. In particular, one of the main early archosauromorph groups that need an exhaustive phylogenetic study is "P...
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