| 词条 | Aspidoceras |
| 释义 |
|fossil_range = {{fossil range|Oxfordian|Berriasian|ref=[1]}} |image = Aspidoceratidae - Aspidoceras acanthicum.JPG |image_caption = Fossil shell of Aspidoceras acanthicum from Jurassic of Madagascar |regnum = Animalia |phylum = Mollusca |classis = Cephalopoda |subclassis = Ammonoidea |ordo = Ammonitida | subordo = Ammonitina | superfamilia = Perisphinctoidea |familia = Aspidoceratidae |genus = Aspidoceras |genus_authority = Zidttel, 1868 }}Aspidoceras is an extinct ammonoid cephalopod genus belonging to the family Aspidoceratidae. [2] TaxonomyAspidoceras, named by Zittel, 1868, is the type genus for the persphictacian family Aspidoceratidae and subfamily Aspidoceratinae in which it is included. It is considered related to genera like Chinamecaceras, Cubaspidoceras, Euaspidoceras, Extranodites, Intranodites, Neaspidoceras, Oligopsychopsis, Orthaspidoceras, Schaireria and Simaspidoceras.[3]Selected species
Fossil recordAspidoceras mainly lived during the Late Jurassic (Oxfordian) until Cretaceous (Berriasian), with a fairly broad distribution. Fossils have been found in Italy, Chile, Spain, Algeria, Antarctica, Argentina, Ethiopia, France, Germany, Hungary, India, Iran, Madagascar, Portugal, Romania, Russia, Somalia, Switzerland, the United Kingdom, United States and Canada.[3]DescriptionAspidoceras has an evolute shell with quadrate-rounded or depressed whorls that have two rows of tubercles, the outer near the middle of the whorl sides. The outer row soon fades in many species. Some species are also ribbed. The venter, or outer rim, is generally wide and broadly arched. Aspidoceras was predated by Euaspidoceras, possibly its ancestor. [4]References1. ^{{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. ^ Mikko's Phylogeny Archive: Ammonitida 3. ^1 2 Paleobiology Database 4. ^Crioceratites.free {{fr}} Further reading
See also
12 : Ammonitida genera|Aspidoceratidae|Jurassic ammonites|Cretaceous ammonites|Ammonites of South America|Oxfordian first appearances|Early Cretaceous genus extinctions|Jurassic Argentina|Jurassic Chile|Cretaceous Chile|Cretaceous Spain|Paleozoic life of Quebec |
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