“Astieridiscus”的意思、由来-开放百科全书

词条

Astieridiscus

释义

Notes
References

{{Italic title}}{{Taxobox
|fossil_range = {{fossil range|Barremian|ref=^[1]}}
|regnum = Animalia
|phylum = Mollusca
|classis = Cephalopoda
|subclassis = Ammonoidea
|ordo = Ammonitida
|superfamilia = Desmoceratoidea
|familia = Holcodiscidae
|genus = Astieridiscus
|genus_authority = Kilian, 1910 }}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]

Notes

1. ^{{cite web | last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database|authorlink =| coauthors =| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class| accessdate = 2014-05-28 }}
2. ^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.

References

{{cite book| first1=W.J. |last1=Arkell |first2=B. |last2=Kummel |first3=C.W. |last3=Wright |series=Treatise on Invertebrate Paleontology, Part L, Mollusca 4| title=Mesozoic Ammonoidea | publisher=Geological Society of America and University of Kansas Press |location=Lawrence, Kansas|year=1957}}

5 : Cretaceous ammonites|Ammonites of Europe|Barremian life|Ammonitida genera|Desmoceratoidea

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