20
4
January
793
804
KENNEDY, W. J., COOPER, M. R. 1978. The micromorph Albian ammonite Falloticeras Parona and Bonarelli. Palaeontology, 20, 4, 793–804.
W. J. Kennedy and M. R. Cooper 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. The Palaeontological Association (Free Access)