MULTIPROXY TAPHONOMIC ANALYSIS IN THE LOS COLORADOS FORMATION (UPPER TRIASSIC), ISCHIGUALASTO-VILLA UNIÓN BASIN, ARGENTINA: A CASE STUDY THROUGH SAUROPODOMORPH REMAINS

PÉREZ, LEANDRO M.; GAETANO, LEANDRO C.; POIRÉ, DANIEL G.; ALONSO MURUAGA, PABLO J.; KRAPOVICKAS, VERÓNICA; OTERO, ALEJANDRO; LEARDI, JUAN M.

JOURNAL OF SOUTH AMERICAN EARTH SCIENCES

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2022

0895-9811

We present the first taphonomic analysis on basal sauropodomorph dinosaur remains from the Los ColoradosFormation. We analyzed 22 bone samples with X-ray diffractometry, three of these in petrographic sections andone of them in SEM. In this article we recognize the taphonomic processes (biostratinomic and fossil-diagenetic)involved in the genesis of the ?La Esquina Local Fauna?. Regarding fossil diagenesis, it was possible to recognizethe different processes that acted on the bone remains. In this sense, we analyzed different types of fracturepresent in the bones and their relationship with expansion generated by changes in the volume of minerals (forexample, carbonates, gypsum and anhydrite). Finally, the importance of more taphonomic studies throughoutthe Los Colorados Formation is highlighted in order to better understand the vertebrate fossil record it contains.