| 词条 | Zurcheria |
| 释义 |
| fossil_range = {{fossil range|Bajocian|ref=[1]}} | regnum = Animalia | phylum = Mollusca | classis = Cephalopoda | subclassis = Ammonoidea | ordo = Ammonitida | superfamilia = Hildocerataceae | familia = Hammatoceratidae | subfamilia = Zurcheriinae | genus = Zurcheria | genus_authority = Douville, 1885 }} Zurcheria is a genus of dwarf ammonites from the Middle Jurassic included in the Hammatoceratidae [2] and lacking a keel. The shell is evolute, inner whorls exposed; whorls compressed and slightly overlapping. Bears ribs, which are sinuous folds that project strongly onto the arched venter. References
1. ^{{cite journal|last=Sepkoski |first=Jack |title=A compendium of fossil marine animal genera (Cephalopoda entry) | journal=Bulletins of American Paleontology |volume=363 |pages=1–560 | year=2002 | url=http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class |accessdate=2017-10-18 |deadurl=yes | archiveurl=https://web.archive.org/web/20160225225905/http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class | archivedate=2008-05-07 |df= }} 2. ^{{cite web | title= Paleobiology Database - Zurcheria |authorlink =| coauthors = | year = | url = http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=257980&is_real_user=1| accessdate = 2017-10-19 }}
3 : Hammatoceratidae|Ammonitida genera|Middle Jurassic ammonites |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。