New middle Eocene decapods (Crustacea) from Chiapas, México

Decapod crustacean specimens from the middle Eocene San Juan Formation in central Chiapas represent the first record of Eocene decapods in southern México. New taxa include: Dardanus mexicanus new species (Diogenidae), Lophoranina cristaspina new species, Notopus minutus new species (Raninidae); Ver...

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Bibliographic Details
Published in:Journal of Paleontology
Main Authors: Vega, Francisco J., Cosma, Timothy, Coutiño, Marco A., Feldmann, Rodney M., Nyborg, Torrey G., Schweitzer, Carrie E., Waugh, David A.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2001
Subjects:
Paleontology
San Juan
Greenland
Online Access:http://dx.doi.org/10.1017/s002233600003986x
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002233600003986X
Description
Summary:Decapod crustacean specimens from the middle Eocene San Juan Formation in central Chiapas represent the first record of Eocene decapods in southern México. New taxa include: Dardanus mexicanus new species (Diogenidae), Lophoranina cristaspina new species, Notopus minutus new species (Raninidae); Verrucoides stenohedra new genus and new species (Xanthidae); Stoaplax nandachare new genus and new species (Goneplacidae); and Viapinnixa alvarezi new species (Pinnotheridae). Verrucoides verrucoides new genus and new combination from the Paleocene of Greenland represents a new combination. In addition, the fauna includes Callianassa sensu lato sp., Laeviranina sp., Calappilia cf. C. hondoensis Rathbun, 1930, Eriosachila sp., and indeterminate calappid and xanthoid taxa. This assemblage bears close relationship with coeval faunas in the Tethyan region of southern Europe and southern North America and with Paleocene faunas of Greenland, strengthening the evidence for previously described patterns of dispersal within the Decapoda.

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