Histological bone marrow preservation in Mesosaurus tenuidens Gervais, 1864 and Stereosternun tumidum Cope, 1886 from Paraná Basin, Rio Grande do Sul, Brazil

Authors

  • Lílian de L. Timm
  • Dina Celeste Araújo-Barberena

Abstract

Preservation of microstructures and soft tissues is rare in the fossil record. This paper treats with the first record of medullar cells in an ulna of Mesosaurus tenuidens Gervais 1864 and in a vertebra, metatarsus and tarsus bones of Stereosternum tumidum Cope 1886, preserved in limestones. The vascularization and the type of osseous matrix are described and the presence of osteoblasts or juvenile osteocytes is suggested on basis of the morphology, position and size of the cell preservation.

Key words: Mesosaurus, Stereosternum, bone marrow, cells, histology, Irati Formation, Permian.

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Published

2021-06-08

Issue

Vol. 2 No. 1 (2006): jan/jun

Section

Artigos

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