Tiltoniceras
Tiltoniceras is an extinct genus of cephalopod belonging to the family Hildoceratidae. These cephalopods existed in the Jurassic period, from upper Pliensbachian age, Spinatum zone until lower Toarcian, Tenuicostatum zone in what is now Europe, North America and Asian part of Russia.[1]
Tiltoniceras | |
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T. antiquum from Haverlahwiese (Germany) | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | †Ammonoidea |
Order: | †Ammonitida |
Family: | †Hildoceratidae |
Subfamily: | †Harpoceratinae |
Genus: | †Tiltoniceras Buckman, 1913 |
Type species | |
Tiltoniceras costatum Buckman, 1913 | |
Species | |
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Synonyms | |
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Description
Moderately involute to very involute shells, strongly keeled without sulci. They are compressed with rounded umbilical edge and nearly flat whorl sides. Ribs can be from strong, through fine, striate to smooth. They are gently sigmoidal to straight and on the venter they are strongly projected forward.[1]
gollark: Also the code is bad.
gollark: The issue is that it does not currently generate a language which can be executed.
gollark: Well, I have #1 done, and #3 done, and technically #2.
gollark: I think you can get some sort of offline copy.
gollark: This is troubling as osmarkscompiler™ is to be written in Haskell, once I work out how compilers work.
References
- M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.
External links
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