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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Taxonomic identification of the Megaloolithid egg and eggshells from the Cretaceous Bauru Basin (Minas Gerais, Brazil): comparison with the Auca Mahuevo (Argentina) titanosaurid eggs

Full text
Author(s):
Grellet-Tinner, Gerald ; Zaher, Hussam [2]
Total Authors: 2
Document type: Journal article
Source: Papéis Avulsos de Zoologia (São Paulo); v. 47, n. 7, p. 105-112, 2007.
Field of knowledge: Biological Sciences - Zoology
Abstract

The taxonomically (titanosaurid) identified eggs and eggshells of Auca Mahuevo (Patagonia, Argentina) provide an opportunity to compare and identify orphan megaloolithid eggs found elsewhere. Previous investigation determined that the zoological material from Neuquén (Megaloolithus patagonicus) and Peru (M. pseudomamillare) are related to titanosaurid dinosaurs. Examination of an egg and several (megaloolithid) eggshell fragments from the Upper Cretaceous Marilia Formation strongly suggests, as zoological characters are at least genus specific, that the same group of titanosaur dinosaurs, which lived in the Neuquén Basin during the Late Campanian, were also present and reproducing in the Cretaceous Bauru Basin (Brazil). Furthermore, it has been suggested that these titanosaurs, based on the site of Auca Mahuevo, demonstrated colonial nesting and nesting fidelity. These reproductive behaviors would advocate that similar nesting sites should exist in the Upper Cretaceous formations of the Bauru Basin and remain to be discovered, as the present Peiropolis locality represents a secondary deposit where fossils have been transported by high-energy fluvial system. (AU)

FAPESP's process: 05/55100-3 - Gerald Grellet Tinner | Natural History Museum of Los Angeles County - United States
Grantee:Hussam El Dine Zaher
Support type: Research Grants - Visiting Researcher Grant - International
FAPESP's process: 02/13602-4 - Evolution of the southeastern Brazilian reptile fauna from Cretaceous: paleontology, phylogeny and biogeography
Grantee:Hussam El Dine Zaher
Support type: BIOTA-FAPESP Program - Thematic Grants