Xenocephalites can be recognized by its coarsely ribbed, prominently umbilicate, involute shell where in ribs are widely splayed, tending to bifurcate high on the flanks. Macrocephalites is similar except that its ribbing is finer and more dense. In both the ribbing crosses uninterrupted over the venter.
Referencesedit
Arkell, et al., Mesozoic Ammonoidea' Treatise on Invertebrate Paleontonology, Part L (1957); Geological Society of America.
Xenocephalites, Paleo db.
This Ammonitida-related article is a stub. You can help Wikipedia by expanding it.
xenocephalites, extinct, genus, ammonoid, cephalopods, from, late, middle, jurassic, belonging, stephanoceratoid, family, macrocephalitidae, known, from, southern, alaska, greenland, mexico, argentina, temporal, range, middle, jurassicscientific, classificatio. Xenocephalites is an extinct genus of ammonoid cephalopods from the late Middle Jurassic belonging to the stephanoceratoid family Macrocephalitidae It is known from southern Alaska Greenland Mexico and Argentina XenocephalitesTemporal range Middle JurassicScientific classificationDomain EukaryotaKingdom AnimaliaPhylum MolluscaClass CephalopodaSubclass AmmonoideaOrder AmmonitidaFamily MacrocephalitidaeGenus XenocephalitesSpath 1928Xenocephalites can be recognized by its coarsely ribbed prominently umbilicate involute shell where in ribs are widely splayed tending to bifurcate high on the flanks Macrocephalites is similar except that its ribbing is finer and more dense In both the ribbing crosses uninterrupted over the venter References editArkell et al Mesozoic Ammonoidea Treatise on Invertebrate Paleontonology Part L 1957 Geological Society of America Xenocephalites Paleo db 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 Xenocephalites amp oldid 1077640441, wikipedia, wiki, book, books, library,
