Fossil of Ancyloceras from the lower Aptian of the Paris Basin (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
†Ammonoidea
Order:
†Ammonitida
Suborder:
†Ancyloceratina
Superfamily:
†Ancyloceratoidea
Family:
†Ancyloceratidae Meek, 1876
Genera
See text
Ancyloceratidae is a family of heteromorphic ammonites that lived during the Early Cretaceous. Their shells begin as a loose spiral with whorls not touching which then turns into a straight shaft that ends in a J-shape hook or bend at end. Coarse ribbing and spines are common.
Ancyloceratidae is the type family for the Ancyloceratoidea and of the suborder Ancyloceratina. They are found in Lower Cretaceous, Barremian to perhaps Lower Albian sediments.
Genera include:
Ammonitoceras Dumas, 1876
Ancyloceras D'Orbigny, 1842 - type genus
Ancylotropaeum Casey, 1980
Antarcticoceras Thomson, 1974 [1]
Audouliceras Thomel, 1965
Australiceras Whitehouse, 1926
Caspianites Casey, 1961
Epancyloceras Spath, 1930
Epitroapeum Kakabadze, 1977
Helicancyloceras Klinger & Kennedy, 1977
Hoheneggericeras Delanoy et al. 2008
Jaubertites Sarkar, 1955
Kutatissites Kakabadze, 1970
Koeneniceras Mikhailova & Baraboshkin, 2002
Laqueoceras Kakabadze & Hoedemaeker, 2004
Lithancylus Casey, 1960
Luppovia Bogdanova et al. 1978
Proaustraliceras Kakabadze, 1977
Pseudoancyloceras Stenshin et al., 2014
Pseudoaustraliceras Kakabadze, 1981
Pseudocrioceras Spath, 1924
Sarkariceras Vermeulen, 2006
Shastoceras Anderson, 1938
Toxancyloceras Delanoy, 2003
Tropaeum J. de C. Sowerby, 1837
Ancyloceratidae are derived from the Crioceratidae, a family of Lower Cretaceous ammonites with loosely wound, open planispiral shells, probably originating from within the suborder Lytoceratina.
^M.R.A. Thomson, « Ammonite faunas of the Lower Cretaceous of south-eastern Alexander Island », British Antarctic Survey Scientific Reports, No. 80 (1974), p.1-44.
Ancyloceratidae is a family of heteromorphic ammonites that lived during the Early Cretaceous. Their shells begin as a loose spiral with whorls not touching...
Ancyloceratina Superfamily Ancyloceratoidea Family Acrioceratidae Family Ancyloceratidae Family Bochianitidae Family Crioceratitidae Family Hamulinidae Family...
and heavy hooked Ancyloceratidae. Although resembling Acrioceras in general form, Toxancyloceras is included in the Ancyloceratidae where it resides as...
part of the Early Cretaceous, Aptian stage, included in the family Ancyloceratidae. Australiceras has an evolute shell, coiled with all whorls showing...
Acanthoptychoceras is an extinct genus of ammonites belonging to the family Ancyloceratidae. Acanthoptychoceras spinatocostatum Manolov, 1962 Fossils of Acanthoptychoceras...
to the Ancyloceratoidea. Crioceratites was formerly included in the Ancyloceratidae, in the subfamily Crioceratinae which was subsequently elevated in...
California and Japan. Aegocrioceras was placed in the "Crioceratidae" (Ancyloceratidae, Crioceratinae) in Part L of the American Treatise on Invertebrate...
during the Early Cretaceous. As with many other members of the family Ancyloceratidae, there was a trend among species within this genus to uncoil somewhat...
overall form of the shell was more similar to the Crioceratidae than the Ancyloceratidae. The exact placement of Antarcticoceras remained uncertain because...
Crioceratidae were included in the American TreatisePart L, 1957, in the Ancyloceratidae as the subfamily Crioceratinae. It is now considered a distinct family...
superfamilies. Arkell, et al. (1957) in the Treatise Part L included just the Ancyloceratidae Meek 1876, Bochianitidae Spath 1922, Hemihoplitidae Spath 1924, and...
from the original coil. Lytocrioceras was originally included in the Ancyloceratidae (Lytoceratina), united with other similar forms but has since been...
and Cochidites. The family, Heteroceratidae, is a derivative of the Ancyloceratidae. Paleontology portal Wright, C. W. with Callomon, J.H. and Howarth...
Mordellidae Uhligia (ammonite), a genus of cephalopods in the family Ancyloceratidae This disambiguation page lists articles about distinct genera with...
as in Ancyloceras or Acrioceras, Ammonitoceras is included in the Ancyloceratidae. However neither do Australiceras or Tropaeum, which are also included...
a new genus of micromorphic heteromorph ammonite (Ancyloceratina, Ancyloceratidae)from the lower Aptian of Spain. Carnets de Géologie [Notebooks on Geology]...
a new genus of micromorphic heteromorph ammonite (Ancyloceratina, Ancyloceratidae)from the lower Aptian of Spain. Carnets de Géologie [Notebooks on Geology]...
S2CID 260404597. Delanoy, G.; Baudouin, C. (2023). "New data on the family Ancyloceratidae (Ammonoidea, Ancyloceratoidea) from the Upper Barremian/Lower Aptian...
wound early portion, its form indicates it more likely belongs to the Ancyloceratidae.[citation needed] Shastoceras resembles Uhligia from the Lower Barremian...
faunas from Zululand, South Africa, and southern Mozambique. The Aptian Ancyloceratidae (Ammonoidea). Annals of the South African Museum, 73(9), 215-359. Muir...
Bert et al. Early Cretaceous (Barremian) France Spain A member of Ancyloceratidae. Transcaspiites transitionis Sp. nov Valid Mitta Early Cretaceous Russia...
Baudouin; Antoine Pictet; Pierre Delattre; Emmanuel Penage (2017). "Ancyloceratidae (Ammonoidea, Ancyloceratoidea) nouveaux ou peu connus de l'Aptien inférieur...
a new genus of micromorphic heteromorph ammonite (Ancyloceratina, Ancyloceratidae) from the lower Aptian of Spain". Carnets de Géologie. Article 2013/02:...
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