A palaeo-opportunistic brachiopod from the Early Permian of Argentina

SIMANAUSKAS, T.; CISTERNA, G.A.

ALCHERINGA

TAYLOR & FRANCIS LTD

Lugar: Londres; Año: 2000 vol. 24 p. 45 - 53

0311-5518

Neochonetes sp. (Brachiopoda, Chonetoidea) is recorded from the middle to upper part of the early Permian Rio del Pefi6n Formation, Rio Blanco Basin, La Rioja, Argentina. It can be recognised as an r-strategist based on distribution, facies, morphological and ontogenic data which agree with the criteria proposed by Levinton and Alexander for recognising palaeo-opporttmistic brachiopods. The new record of an opportunistic chonetid suggests that the group may have evolved this adaptative strategy during the late Palaeozoic.