Nannolytoceras is an extinct genus of lytoceratid ammonite, family Lytoceratidae, with a stratigraphic range extending from the Bajocian age to Bathonian age (Medium Jurassic).
Description Shells of Nannolytoceras species reach a diameter of about .Ammonites Nannolytoceras - Nannolytoceras tripartitumAmmonites.fr The shell is evolute, smooth, tubular to compressed, with a variable number of more or less regularly spaced deep constrictions. The very thin ribs crossing the ventral region are barely visible. Umbilicus is relatively large. The suture line is of ammonitic type.Redjaen These cephalopods were fast-moving nektonic carnivores.Paleobiology Database - Nannolytoceras. 2017-10-19.
Distribution Fossils of species within this genus have been found in the Jurassic rocks of Italy, Spain, Slovakia,Schlögl Ján (2001). Sedimentológia a biostratigrafia červených hľuznatých vápencov čorštýnskeho súvrstvia ("Ammonitico Rosso") v pieninskom bradlovom pásme. and France.
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