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New Cancellariidae (Mollusca, Gastropoda) From the Miocene Gatun Formation of Panama, With Eleven New Species

  • Bernard Landau (a1), Richard E. Petit (a2) and Carlos M. Da Silva (a3)
Abstract

Thirty species of Cancellariidae in 11 genera from the Miocene Gatun Formation in the Panama Canal area, Caribbean Panama, are discussed including two species not represented by specimens suitable for formal description. The following 11 species are described as new: Cancellaria harzhauseri n. sp., Cancellaria mixta n. sp., Bivetiella dilatata n. sp., Euclia alacertata n. sp., Pyruclia tweedledum n. sp., Pyruclia tweedledee n. sp., Massyla toulai n. sp., Aphera aphrodite n. sp., Axelella cativa n. sp., Agatrix agathe n. sp., Ventrilia coatesi n. sp. This assemblage of cancellariids is very diverse and highly endemic, with 18 (60 percent) species found only in the Miocene Gatun Formation. These assemblages all lie within the Gatunian Neogene Paciphile Molluscan Unit 1 (GNPMU1).

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R. J. L. Guppy 1866. On the Tertiary Mollusca of Jamaica. Quarterly Journal of the Geological Society of London, 22:281295, pls. 16–18.

R. J. L. Guppy 1876. On the Miocene fossils of Haiti. Quarterly Journal of the Geological Society of London, 32:516532, pls. 28–29.

R. J. L. Guppy and W. H. Dall 1896. Descriptions of Tertiary fossils from the Antillean region. Proceedings of the United States National Museum, 19 (1110): 303331, pls. 27–30.

B. M. Landau , R. E. Petit , and C. M. da Silva 2012. The family Cancellariidae (Mollusca: Gastropoda) in the Neogene of the Bocas del Toro Region, Panama, with the description of seven new species. Journal of Paleontology, 86:311339, figs. 1–11.

B. M. Landau , G. J. Vermeij , and C. M. da Silva 2008. Southern Caribbean Neogene palaeobiogeography revisited. New data from the Pliocene of Cubagua, Venezuela. Palaeogeography, Palaeoclimatology, Palaeoecology, 257:445461, figs. 1, 2.

B. M. Landau , G. J. Vermeij , and C. M. da Silva 2009. Pacific elements in the Caribbean Neogene gastropod fauna: the source-sink model, larval development, disappearance, and faunal units. Bulletin de la Société Géologique de France, 180:249258.

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Journal of Paleontology
  • ISSN: 0022-3360
  • EISSN: 1937-2337
  • URL: /core/journals/journal-of-paleontology
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