ormoceras造句

例句与造句

1. It may have been derived from " Wutinoceras ", or from a common ancestor, and gave rise to " Ormoceras ".
2. Ormoceras also gave rise to later genera such as " Metarmenoceras " from the Lower Devonian of Quebec, either directly or through " Cyrtactinoceras " of the Silurian, once thought to have given rise to the Carboniferous Carbactinoceratidae.
3. "Ormoceras " is a characterized by its straight shell, more or less circular in cross section, and a relatively narrow subcentral siphuncle composed of globular segments in which the radial canals in the endosiphuncular canal system are straight and normal to the central canal.
4. ""'Paractinoceras " "'is a long straight slender siphuncular segments in the early stages like those of " Actinoceras ", becoming narrower in the later stages of the chambered phragmocone like those in " Ormoceras ".
5. "Paractinoceras " is probably the most distinct actinoceratid from " Actinoceras " . " Paractinoceras " has a long, straight, slender shell and a siphuncle that starts off like that in " Actinoceras ", but becomes narrow like that in " Ormoceras " in the anterior part of the phragmocone.
6. It's difficult to find ormoceras in a sentence. 用ormoceras造句挺难的
7. "Ormoceras " is derived from " Adamsoceras " which has a siphuncle with the same general form but in which the canal system is reticulate as in " Wutinoceras " . " Ormoceras " gave rise to " Deiroceras " early on during the Mohawkian ( Middle Ordovician ) and slightly later to " Troedssonoceras ".
8. "Ormoceras " is derived from " Adamsoceras " which has a siphuncle with the same general form but in which the canal system is reticulate as in " Wutinoceras " . " Ormoceras " gave rise to " Deiroceras " early on during the Mohawkian ( Middle Ordovician ) and slightly later to " Troedssonoceras ".
9. "Paractinoceras ", named by Hyatt, in Zittel 1900, is a long, straight, slender-shelled actinocerid with the siphuncle segments in the early stage expanded as in " Actinoceras ", but becoming narrow in the later stages as in " Ormoceras " . " Paractinoceras " has been found in North America in Manitoba, and in Russia in Siberia.