Oldest record of Mathildellidae (Crustacea: Decapoda: Goneplacoidea) associated with Retroplumidae from the Upper Cretaceous of NE Mexico
Por:
Vega F.J., Ahyong S.T., Espinosa B., Flores-Ventura J., Luna L., González-González A.H.
Publicada:
1 mar 2018
Resumen:
A new genus and species of the Mathildellidae Prebranchioplax cretacica
(Crustacea: Decapoda: Goneplacoidea) is reported from shallow marine
sediments of the upper Campanian Parras Shale and Cerro del Pueblo
Formation (Parras Basin), Coahuila, NE Mexico. Prebranchioplax cretacica
was collected from siliceous concretions associated with more abundant
specimens of the retroplumid Costacopluma mexicana Vega and Perrilliat,
1989. P. cretacica bears similarities to Eocene species of Branchioplax
from Japan, USA (Alaska and Washington), England, Hungary and Tajikistan
as well as with Eogeryonidae (Portunoidea) species from the Upper
Cretaceous of Spain and Marocarcinidae (Styracocarcinus) from Morocco.
However, clear differences in the carapace frontal shape places P.
cretacica in the Mathildellidae. This record represents the oldest known
Mathildellidae, and along with the Retroplumidae, appear to have
originated during the Late Cretaceous in ancient seas of Mexico, with a
wide distribution during Paleogene times becoming restricted today to
deep waters of the Indo-Pacific region and Atlantic Ocean. Comments on
preservation and morphology of Costacopluma mexicana are also included.
Crab specimens preserved in siliceous concretions from one locality
(Entronque) show peculiar desiccation marks, and a possible model of
taphonomy. (C) 2017 Elsevier Ltd. All rights reserved.
Filiaciones:
Vega F.J.:
Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, CDMX, Mexico
Ahyong S.T.:
Australian Museum, 1 William St., Sydney, NSW, Australia
School of Biological, Earth and Environmental Sciences, University of New South Wales, Kensington, NSW, Australia
Espinosa B.:
Benemérita Escuela Normal de Coahuila, Calzada de los Maestros # 858 Pte., Zona Centro, Saltillo, Coahuila, Mexico
Flores-Ventura J.:
Santa Engracia 257, Fraccionamiento Santa Elena, Saltillo, Coahuila, Mexico
Luna L.:
Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, CDMX, Mexico
González-González A.H.:
Museo del Desierto, Carlos Abedrop Dávila 3745, Parque las Maravillas, Saltillo, Coahuila, Mexico
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