{{Short description|Extinct genus of molluscs}} {{other uses}} {{Automatic Taxobox | fossil_range = {{fossil_range|Albian|Cenomanian}} | image = Mariella lewesiensis.jpg | image_upright = 0.7 | image_caption = ''Mariella lewesiensis'' fossil | taxon = Mariella | authority = Nowak, 1916 }}
'''''Mariella''''' is an ammonoid genus, named by Nowak (1916) from the upper Albian and Cenomanian stages of the mid Cretaceous, included in the Turrilitidae. Its type is ''Turrilites bergeri''
== Description == ''Mariella'' resembles ''Turrilites'' in general form. The shell is asymmetric, closely wound in a long expanding trochoidal spire. Ribs are slightly oblique and are rather feeble, each with 4 more or less equally spaced tubercles. ''Turrilites'' differs primarily in being more strongly ribbed and in having a more oval aperture.
== Distribution == Fossils of ''Mariella'' have been found in Angola, Antarctica, Australia, Brazil, Canada (British Columbia), Colombia (Hiló Formation), France, Germany, Iran, Japan, Kazakhstan, Madagascar, Mexico, Mozambique, New Zealand, South Africa, Spain, Switzerland, Turkmenistan, Ukraine, the United Kingdom, and the United States (California, Texas, Oregon).<ref name=FWMariella>[https://paleobiodb.org/classic/displayCollResults?collection_no=67357 ''Mariella''] at Fossilworks.org</ref>
== References == {{Reflist}}
== Further reading == * {{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}}
{{Taxonbar|from=Q6763154}}
Category:Ammonitida Category:Albian genus first appearances Category:Cenomanian genus extinctions Category:Ammonites of South America Category:Cretaceous Brazil Category:Cretaceous Colombia Category:Ammonites of Australia Category:Cretaceous animals of Australia Category:Ammonites of Antarctica Category:Late Cretaceous ammonites of North America Category:Cretaceous Canada Category:Cretaceous Mexico Category:Cretaceous United States Category:Cretaceous Africa Category:Cretaceous Asia Category:Late Cretaceous ammonites of Europe