MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia
KROH, ANDREAS; MOOI, RICH; DEL RIO, CLAUDIA JULIA; NEUMANN, CHRISTIAN
Lugar: Auckland; Año: 2013 vol. 3608 p. 369 - 369
A new species of abertellid sand dollar, Abertella miskellyi n. sp., is described from the Miocene Camarones Formationof Patagonia, southern Argentina. The new taxon corroborates the existence of the genus in South America, given thatAbertella is most common in the southeastern USA and the eastern coast of Central America. It is characterized by aunique basicoronal circle, in which the interambulacral basicoronal plates are very heterogeneous in size (small ininterambulacrum 5, largest in interambulacra 2 and 3). Additionally, it features disjunct oral interambulacra involving twoambulacral plates in some of the interambulacra rather than one, thus being the most disjunct of all known species ofAbertella. A key to the species of the genus is provided.