INVESTIGADORES
MEROI ARCERITO Facundo Rene
artículos
Título:
The first hirnantian (Uppermost Ordovician) Odontopleurid trilobite from western Gondwana (argentina).
Autor/es:
HALPERN K.; RUSTÁN J.J.; MEROI ARCERITO F.R.
Revista:
REVISTA BRASILEIRA DE PALEONTOLOGIA
Editorial:
SOC BRASILEIRA PALEONTOLOGIA
Referencias:
Lugar: Porto Alegre; Año: 2014 vol. 17 p. 3 - 10
ISSN:
1519-7530
Resumen:
An odontopleurid trilobite remain is described for the first time from Hirnantian (uppermost Ordovician) rocks of Western Gondwana. Very rare material, represented by a single left librigena, comes from a new fossil locality of the Don Braulio Formation in the Eastern Argentine Precordillera. Based on an updated systematic discussion, the fossil is tentatively referred to Eoleonaspis Sheng (1974). Environmental and paleogeographical settings of this finding suggest that the genus would be eurytopic, having a cosmopolitan geographical distribution during the Ordovician-Silurian interval. In addition, the new evidence reinforces that scarce odontoplerurids, often represented by Eoleonaspis, characterize a trilobite association together with Mucronaspis, strengthening it as a worldwide Hirnantian biostratigraphic indicator.
