Aegocrioceras is coiled in an open planispiral; whorls are strongly ribbed and bear spines on the outer shoulders (ventro-lateral) of the inner whorls. Aegocrioceras is similar to the earlier Upper ValanginianJuddiceras of Germany and to the later Shasticrioceras from the Barremian of California and Japan.
Aegocrioceras was placed in the "Crioceratidae" (Ancyloceratidae, Crioceratinae) in Part L of the American Treatise on Invertebrate Paleontology published in 1957. Since then it has been reassigned to the Aegocrioceratidae which is included in the superfamily Protancyloceratoidea.
W.J Arkell, et al. 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press.
Aegocrioceras in the Paleobiology Database.
April 13, 2024
aegocrioceras, extinct, ammonite, genus, cephalopod, from, lower, cretaceous, included, ammonitida, known, from, northern, europe, temporal, range, early, hauterivian, preꞒ, nscientific, classificationdomain, eukaryotakingdom, animaliaphylum, molluscaclass, ce. Aegocrioceras is an extinct ammonite genus of cephalopod from the Lower Cretaceous included in the Ammonitida It is known from northern Europe AegocriocerasTemporal range Early Hauterivian PreꞒ Ꞓ O S D C P T J K Pg NScientific classificationDomain EukaryotaKingdom AnimaliaPhylum MolluscaClass CephalopodaSubclass AmmonoideaOrder AmmonitidaSuborder AncyloceratinaFamily AegocrioceratidaeGenus AegocriocerasSpath 1924Aegocrioceras is coiled in an open planispiral whorls are strongly ribbed and bear spines on the outer shoulders ventro lateral of the inner whorls Aegocrioceras is similar to the earlier Upper Valanginian Juddiceras of Germany and to the later Shasticrioceras from the Barremian of California and Japan Aegocrioceras was placed in the Crioceratidae Ancyloceratidae Crioceratinae in Part L of the American Treatise on Invertebrate Paleontology published in 1957 Since then it has been reassigned to the Aegocrioceratidae which is included in the superfamily Protancyloceratoidea References editThis article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help improve this article by introducing more precise citations March 2013 Learn how and when to remove this template message W J Arkell et al 1957 Mesozoic Ammonoidea Treatise on Invertebrate Paleontology Part L Geological Society of America and University of Kansas Press Aegocrioceras in the Paleobiology Database Retrieved from https en wikipedia org w index php title Aegocrioceras amp oldid 1075286547, wikipedia, wiki, book, books, library,
