THE FIRST RECORD OF THE EXTINCT CRAB NECRONECTES (DECAPODA: PORTUNIDAE) IN VENEZUELA

CARLOS CÁCERES, ASCANIO D. RINCÓN, ANDRÉS SOLÓRZANO, MÓNICA NÚÑEZ FLORES, DAMIAN RUIZ-RAMONI, LEONARDO SÁNCHEZ

Resumo


The Urumaco Formation is well known for being fossiliferous, including both vertebrate and invertebrate assemblages. Despite extensive fi eld work over the past years the decapod fauna from the Urumaco Formation still remains poorly known. In the present work we report for the fi rst time the presence of the extinct portunid crab, Necronectes proavitus Rathbun from Venezuela, based on a well-preserved cast of the carapace recovered from the late Miocene Urumaco Formation. This record signifi cantly contributes to a better understanding of both the biochronology and biogeography of Necronectes in the Caribbean region. N. proavitus is now known from the early to late Miocene of Puerto Rico, Trinidad, Panama, Venezuela and Brazil.

Palavras-chave


Necronectes; South America; Late Miocene; Urumaco Formation; Portunids.

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DOI: http://dx.doi.org/10.4072/rbp.2016.1.11

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