holochoaniticとは 意味・読み方・使い方

形容詞

holochoanitic (not comparable)

1. (paleontology) Long, cylindrical, and reaching between adjacent septums.
   • 1942, Ozarkian and Canadian Cephalopods: Part III: Longicones and Summary, →ISBN:

     Other Early Paleozoic cephalopods have holochoanitic siphuncles

   • 1964, Memoir - New Mexico Bureau of Mines & Mineral Resources, page 11:

     He accepted the Plectronoceratidae as primitive, and the Ellesmeroceratidae as the derived next step, one characterized by holochoanitic structure and diaphragms, and leading to a group of endoceroids;

   • 2012, Raymond Enay, Palaeontology of Invertebrates, →ISBN:

     However, over a short period of time (less than 10 Ma) during the late Devonian, the Clymeniida developed a dorsal (または internal) holochoanitic siphon.