INVESTIGADORES
MESTRE GARCIA Ana Isabel
artículos
Título:
The first report of South American edrioasteroids and the paleoecology and ontogeny of
Autor/es:
SUMRALL, C.,; HEREDIA, S.; RODRÍGUEZ, C.; MESTRE, A.
Revista:
ACTA PALAEONTOLOGICA POLONICA
Editorial:
INST PALEOBIOLOGII PAN
Referencias:
Año: 2013 vol. 58 p. 763 - 776
ISSN:
0567-7920
Resumen:
A new species of rhenopyrgid edrioasteroid Rhenopyrgus piojoensis sp. nov. is described form the Silurian (Lower Ludlow) Los Espejos Formation in the Precordillera of Argentina. This species is the first reported edrioasteroid from South America. Rhenopyrgids are widely distributed in Ordovician through Devonian deposits of most continents. Numerous juvenile specimens show that the general bodyplan is organized early in ontogeny and that the pedenculate zone lengthens with age. Phylogenetic analysis shows that rhenopyrgids are more closely related to edrioasterid edrioasteroids such as edrioblastoids and cyathocystids than to pyrgocystid isorophids.
