''Mortoniceras'' is an

ammonoid Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family N ...

genus belonging to the superfamily Acanthocerataceae, named by Meek in 1876, based on ''Ammonites vespertinu'', named by Morton in 1834. ''Mortoniceras'' is the type genus of the Mortoniceratinae, one of 4 subfamilies in the Brancoceratidae which is part of the Acanthocerataceae (renamed Acanthoceratoidea to conform with the ICZN ruling on superfamily endings)

Distribution

''Mortoniceras'' is found in middle and upper Albian sediments, at the end of the

Lower Cretaceous Lower may refer to: * ''Lower'' (album), 2025 album by Benjamin Booker * Lower (surname) * Lower Township, New Jersey *Lower Receiver (firearms) * Lower Wick Gloucestershire, England See also * Nizhny {{Disambiguation ...

in Algeria, Angola, Armenia, Belgium, Canada (British Columbia), Colombia (

Hiló Formation The Hiló Formation (, Kih) is a formation (geology), geological formation of the Altiplano Cundiboyacense, Cordillera Oriental (Colombia), Eastern Ranges of the Colombian Andes. The predominantly shale formation dates to the Middle Cretaceous per ...

), Ecuador, France, Germany, Iran, Japan, Madagascar, Mexico, Mozambique, Myanmar, Nigeria, South Africa, Spain, Suriname, Switzerland, Ukraine, the United Kingdom, the United States (California, New Mexico, Texas, Oregon), and Venezuela.''Mortoniceras''
at

Fossilworks Fossilworks was a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was cr ...

.org

Species

''Mortoniceras'' is split up into several

subgenera In biology, a subgenus ( subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between the ge ...

. * ''Mortoniceras equidistans'' * ''Mortoniceras evolutum'' * ''Mortoniceras gainesana'' * ''Mortoniceras leonense'' * ''Mortoniceras scobinum'' * ''Mortoniceras (Angolaites)'' ** ''Mortoniceras'' ''dellense'' ** ''Mortoniceras drakei'' ** ''Mortoniceras gregoryi'' ** ''Mortoniceras simplex'' ** ''Mortoniceras wintoni'' * ''Mortoniceras (Boeseites)'' ** ''Mortoniceras barbouri'' ** ''Mortoniceras howelli'' ** ''Mortoniceras perarmata'' ** ''Mortoniceras proteus'' ** ''Mortoniceras romeri'' * ''Mortoniceras (Deiradoceras)'' ** ''Mortoniceras armintzekalensis'' ** ''Mortoniceras beloventer'' ** ''Mortoniceras bipunctatum'' ** ''Mortoniceras bispinosum'' ** ''Mortoniceras cunningtoni'' ** ''Mortoniceras devonense'' ** ''Mortoniceras exile'' ** ''Mortoniceras mokarahaense'' ** ''Mortoniceras prerostratum'' * ''Mortoniceras (Mortoniceras)'' ** ''Mortoniceras aequatorealis'' ** ''Mortoniceras aitzindari'' ** ''Mortoniceras albense'' ** ''Mortoniceras arietiforme'' ** ''Mortoniceras densecostatum'' ** ''Mortoniceras downii'' ** ''Mortoniceras evolutum'' ** ''Mortoniceras fallax'' ** ''Mortoniceras fissicostatum'' ** ''Mortoniceras inflatum'' ** ''Mortoniceras kiliani'' ** ''Mortoniceras lowrii'' ** ''Mortoniceras multicostatum'' ** ''Mortoniceras nanum'' ** ''Mortoniceras nodosocostatum'' ** ''Mortoniceras ornatum'' ** ''Mortoniceras pachys'' ** ''Mortoniceras potternense'' ** ''Mortoniceras quadrinodosum'' ** ''Mortoniceras recticostatum'' ** ''Mortoniceras subrotundum'' ** ''Mortoniceras'' ''vespertinus'' * ''Mortoniceras (Rusoceras)'' ** ''Mortoniceras nothum'' * ''Mortoniceras (Subschloenbachia)'' ** ''Mortoniceras ambigua'' ** ''Mortoniceras angolaensis'' ** ''Mortoniceras benguellaensis'' ** ''Mortoniceras cycloceratoides'' ** ''Mortoniceras dombensis'' ** ''Mortoniceras inflatiformis'' ** ''Mortoniceras irregularis'' ** ''Mortoniceras meunieri'' ** ''Mortoniceras neuparthi'' ** ''Mortoniceras orientalis'' ** ''Mortoniceras perinflatum'' ** ''Mortoniceras robusta'' ** ''Mortoniceras rostratum'' ** ''Mortoniceras stoliczkai ** ''Mortoniceras striata

Distribution

Species

References

Further reading