α. 1800s rhabdosoma.
β. 1800s– rhabdosome.
单词 | rhabdosome |
释义 | rhabdosomen.α. 1800s rhabdosoma. β. 1800s– rhabdosome. Palaeontology. A branched structure consisting of a number of graptolites joined together to form a colony. ΘΚΠ the world > animals > invertebrates > zoophyte > [noun] > fossil zoophyte > of genus Graptolites > colony of conjoined graptolites rhabdosome1891 1891 tr. S. L. Törnquist in Amer. Geologist 8 38 It is known that Barrande and Süss entertained entirely different conceptions of the structure of that genus [sc. Retiolites] and how sharply the former protested against the latter's interpretation of its rhabdosoma [Sw. rhabdosom]. 1895 Ann. Rep. State Geologist N.Y. 1894 224 The latter [organ] is often so large as to overlap the other central parts and even the proximal ends of the rhabdosomes. 1935 W. H. Twenhofel & R. R. Shrock Invertebr. Paleontol. iv. 90 The Dendroidea include graptolites with fan-shaped rhabdosomes composed of branches or stems joined together into a trellis-like framework by means of transverse bars. 1990 C. Pellant Rocks, Minerals & Fossils 147/2 Glyptograptus is a biserial form with curved thecae which become straighter towards the end of the rhabdosome. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < |
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