{{Short description|Extinct genus of molluscs}} {{Automatic taxobox | fossil_range = {{fossil range|Early Jurassic|Late Cretaceous|ref=<ref name="Sepkoski Ceph"/>}} | image = Phylloceras NT.jpg | image_caption = Artist's reconstruction | image2 = Phylloceratidae - Phylloceras species.JPG | image2_caption = Fossil shell of ''Phylloceras'' species,<br />part removed to reveal the sutures | taxon = Phylloceras | authority = Suess 1865<ref name="fa">[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14493 Paleobiology Database - Microderoceras]. 2017-10-18.</ref> | subdivision_ranks = Species | subdivision_ref = <ref name="fa"/> | subdivision = *''Phylloceras serum'' † <small> Oppel 1865</small> *''Phylloceras asperaense'' † <small> Hillebrandt 2000</small> *''Phylloceras bakeri'' † <small> Imlay 1953</small> *''Phylloceras costatoradiatum'' † <small> Geyer 1886</small> *''Phylloceras cylindricum'' † <small> Sowerby 1833</small> *''Phylloceras doderleinianum'' † <small> Catullo 1853</small> *''Phylloceras hebertinum'' † <small> Reynes 1868</small> *''Phylloceras heterophyllum'' † <small> Sowerby 1820</small> *''Phylloceras meneghinii'' † <small> Gemmellaro 1874</small> *''Phylloceras semisulcatum'' † <small> d'Orbigny 1842</small> *''Phylloceras supraliasicum'' † <small> Pompeckj 1893</small> *''Phylloceras trifoliatum'' † <small> Neumayr 1871</small> *''Phylloceras velledae'' † <small> Michelin 1834</small> }}
'''''Phylloceras''''' is an extinct genus of ammonoid cephalopods belonging to the family Phylloceratidae. These nektonic carnivores lived from Early Jurassic (Hettangian age) to Late Cretaceous (Maastrichtian age) (from 201.30 to 66.043 Ma).<ref name="Sepkoski Ceph">{{cite web | last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database|author-link =| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class| access-date = 2014-05-28 }}</ref><ref name=fa/>
==Description== Shells of ''Phylloceras'' can reach a diameter of about {{convert|8|-|10|cm}}, with a maximum of about {{convert|20|cm}}. These primitive ammonites had an involute, laterally flattened shell with a regular shell opening. They were almost smooth and the ornamentation was virtually absent or, at most, represented by simple growth lines barely visible. The striking sinuous suture lines were characteristic of this genus. They are reminiscent, in some ways, of the leaves of plants (hence the name ''Phylloceras'', which means " leaf-horn").
==Distribution== Fossils of species within this genus have been found all over the world, particularly in Western Europe.<ref name=fa/>
==References== {{Reflist}} * Cyril Walker & David Ward (1993) - Fossielen: Sesam Natuur Handboeken, Bosch & Keuning, Baarn. {{ISBN|90-246-4924-2}}
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Category:Jurassic ammonites Category:Cretaceous ammonites Category:Ammonites of Europe Category:Hettangian genus first appearances Category:Sinemurian genera Category:Pliensbachian genera Category:Toarcian genera Category:Aalenian genera Category:Bajocian genera Category:Bathonian genera Category:Callovian genera Category:Oxfordian genera Category:Kimmeridgian genera Category:Tithonian genera Category:Berriasian genera Category:Valanginian genera Category:Hauterivian genera Category:Barremian genera Category:Aptian genera Category:Albian genera Category:Cenomanian genera Category:Turonian genera Category:Coniacian genera Category:Santonian genera Category:Campanian genera Category:Maastrichtian genus extinctions Category:Ammonites of South America Category:Paja Formation Category:Hasle Formation Category:Fossil taxa described in 1865
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