Graptoliteとは 意味・読み方・使い方

発音

• (英国発音) IPA^(key): /ˈɡɹaptəlʌɪt/

名詞

graptolite (複数形 graptolites)

1. Any of a group of extinct aquatic colonial invertebrates, of the class Graptolithina, from the Cambrian and Carboniferous periods.
   • 2004, Richard Fortey, The Earth, Folio Society, published 2011, page 70:

     The samples were black shale, and on the shales were some ancient fossils called graptolites.

派生語

• graptolitic

参考

• sicula
• prosicula
• rhabdosome