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Extinct species of mollusc From Wikipedia, the free encyclopedia
Belemnitella bulbosa is a species of belemnite from the Late Cretaceous of North America. It is known only from two localities - the Pierre Shale and Fox Hills Formations. B. bulbosa had a slender somewhat cylindrical rostrum (guard) with a slightly expanded front opening. Like other members of the genus Belemnitella, it had a dorsal ridge on the rostrum. The phragmocone is about the same size or slightly longer than the rostrum and has an oval cross-section.[1]
Belemnitella bulbosa Temporal range: | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Order: | †Belemnitida |
Family: | †Belemnitellidae |
Genus: | †Belemnitella |
Species: | †B. bulbosa |
Binomial name | |
†Belemnitella bulbosa Meek & Hayden, 1856 | |
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