Astieridiscus
Astieridiscus is an extinct lower Cretaceous ammonite. Its shell evolute, covered by dense, simple or branching, slightly flexuous ribs. The sides are slightly flattened, the venter rounded. No umbilical or other tubercles except on innermost whorl. Superficially resembles Olcostephanus.[2]
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| Genus: | Astieridiscus Kilian, 1910 |
Notes
- Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
- Wright, C. W. with J.H. Callomon and M.K. Howarth (1996), Mollusca 4 Revised, Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology, Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, p.48.
gollark: Capacitors are just complex resistors.
gollark: I mean, I don't particularly see, but that seems moderately plausible.
gollark: I see.
gollark: ddg! wick-rotated
gollark: Capacitors are actually just rebranded inductors.
References
- Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
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