Zugodactylites

Zugodactylites is an extinct genus of ammonite cephalopod from the lower Toarcian epoch of the Lower Jurassic, ammonite zone Fibulatum. Its fossils are found in Europe, Russia and Canada.[1]

Zugodactylites
Temporal range: Toarcian [1]
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ammonitida
Superfamily:
Eoderoceratoidea
Family:
Dactylioceratidae
Subfamily:
Dactylioceratinae
Genus:
Zugdactylites

Buckman, 1926
Type species
Ammonites braunianus d'Orbigny, 1845
Synonyms
  • Omolonoceras Dagis, 1967
  • Gabillytes Guex, 1971

Whorl section of shells belonging these ammonites were compressed, equidimensional or depressed. Before aperture of adult shell, there has been collar and constriction. Ribs were dense and they were bifurcating at sharp ventrolateral tubercules or spines. There were no fibulate ribs. Sexual dimorphism is known, and Gabillytes, synonym of Zugodactylites were microconchs. They have evolved from finely ribbed Peronoceras.[1]

See also

References
  1. M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.


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