Anisoceras is a heteromorph ammonite belonging to the turrilitoid family Anisoceratidae. The shell forms a loose open helical spiral in the early stages, ending in one or two straight shafts in the mature adult. Surface ornament consists of prominent rounded nodes on the lower and upper flanks, connected by strong looped ribs. The nodes may have been the bases of long sharp spines.
Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
Marcinowski and Wiedmann. The Albian Ammonites of Poland. Palaeontologia Polonica no. 50, 1990
The Paleobiology Database Anisoceras entry
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anisoceras, heteromorph, ammonite, belonging, turrilitoid, family, anisoceratidae, shell, forms, loose, open, helical, spiral, early, stages, ending, straight, shafts, mature, adult, surface, ornament, consists, prominent, rounded, nodes, lower, upper, flanks,. Anisoceras is a heteromorph ammonite belonging to the turrilitoid family Anisoceratidae The shell forms a loose open helical spiral in the early stages ending in one or two straight shafts in the mature adult Surface ornament consists of prominent rounded nodes on the lower and upper flanks connected by strong looped ribs The nodes may have been the bases of long sharp spines AnisocerasTemporal range Late Albian Late Coniacian PreꞒ Ꞓ O S D C P T J K Pg NScientific classificationDomain EukaryotaKingdom AnimaliaPhylum MolluscaClass CephalopodaSubclass AmmonoideaOrder AmmonitidaSuborder AncyloceratinaFamily AnisoceratidaeGenus AnisocerasPictet 1854References editArkell W J Kummel B Wright C W 1957 Mesozoic Ammonoidea Treatise on Invertebrate Paleontology Part L Mollusca 4 Lawrence Kansas Geological Society of America and University of Kansas Press Marcinowski and Wiedmann The Albian Ammonites of Poland Palaeontologia Polonica no 50 1990 The Paleobiology Database Anisoceras entry nbsp This Ammonitida related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Anisoceras amp oldid 1057804848, wikipedia, wiki, book, books, library,
