Skip to content Skip to navigation

Article: The micromorph Albian ammonite Falloticeras Parona and Bonarelli

Publication: Palaeontology
Volume: 20
Part: 4
Publication Date: January 1978
Page(s): 793 804
Author(s): W. J. Kennedy and M. R. Cooper
DOI:
Addition Information (show/hide all)

Abstract

Falloticeras Parona and Bonarelli, 1897 (type species: Ammonites proteus d'Orbigny, 1842) is a diminutive Cretaceous (Middle Albian, dentatus Zone) member of the acanthoceratacean subfamily Mojsisovicsiinae, individuals of which are generally adult at less than 35 mm diameter. The genus is considered to be a micromorph, perhaps a neotenous offshoot of Mojsisovicsia Steinmann, 1881, rather than simply a microconch of that genus. This is suggested by differences in ontogenetic development, relative abundance, and stratigraphic distribution. The type specimens are illustrated photographically for the first time, a lectotype designated, and the range of variation discussed.
PalAss Go! URL: http://go.palass.org/419 | Twitter: Share on Twitter | Facebook: Share on Facebook | Google+: Share on Google+