geisinidとは 意味・読み方・使い方

名詞

geisinid (plural geisinids)

1. A bivalve mollusk of the family Geisinidae.
   • 1977, Doklady: Earth science sections - Volumes 232-234, page 211:

     Geisinids, and other groups having an IPl and usually assigned to the Kloedenellids deserve to be set apart as the independent suborder Parapodocopa.

   • 1978, Robert Vernon Kesling, ‎Ruth B. Chilman, Ostracods of the Middle Devonian Silica Formation:

     The difference between the kloedenellids and the geisinids, as defined, is the development of an anterodorsal process in the former.

   • 1994, Raymond A. Garber, ‎David R. Keller, Field Guide to the Paleozoic Section of the San Andres Mountains:

     Preliminary examination of interbedded dark shales reveals abundant geisinid ostracodes and plant material, interpreted to represent restricted, low energy, nearshore deposition.