Voltar
Artigo Acesso aberto Produção Nacional
BIBTEX RIS

Diplognathodus occurrence in the Itaituba Formation, Amazonas Basin, Brazil

2005; Volume: 8; Issue: 3 Linguagem: Inglês

10.4072/rbp.2005.3.04

ISSN

2236-1715

Autores

Ana Karina Scomazzon,

Tópico(s)

Evolution and Paleontology Studies

Resumo

The Itaituba Formation contains the most abundant and diverse fossiliferous deposits of the Tapajós Group Pennsylvanian of the Amazonas Basin with a rich fauna of normal marine organisms, including conodonts, fish remains, foraminifers, brachiopods, echinoids, gastropods, bryozoans, trilobites, corals, ostracodes, scolecodonts, sponges.Palynomorphs are also common.Conodonts are widely distributed.Genera like Rhachistognathus, Neognathodus, Idiognathodus and Diplognathodus are among the most important to calibrate the age and to correlate the studied deposits.The occurrence of Diplognathodus coloradoensis, D. orphanus, and the first appearance of D. ellesmerensis in the Itaituba Formation, Pennsylvanian of the Amazonas Basin are reported, which suggest an Atokan age to this interval.

Referência(s)