Telodactylites

Telodactylites
Temporal range: Toarcian [1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: †Ammonoidea
Order: †Ammonitida
Family: †Dactylioceratidae
Subfamily: †Nodicoeloceratinae
Genus: †Telodactylites
Pinna et Levi-Setti, 1971
Type species
Peronoceras eucosmus
Lippi-Boncambi, 1947
Species
  • T. eucosmus Lippi-Boncambi, 1947
  • T. renzi Pinna et Levi-Setti, 1971
  • T. levisettii Kovacs, 2014
  • T. achermani Pinna & Levi-Setti, 1971
  • T. desplacei d'Orbigny, 1844

Telodactylites, which is sometimes considered to be a synonym of Porpoceras[2] is genus of ammonite that lived during Toarcian stage (Gradatus ammonite Zone) of early Jurassic. Their fossils were found in Europe, northern Africa and South America. It has probably evolved from Mesodactylites.[1]

Description

Ammonites belonging to this genus have small to medium-sized shells. Coiling is evolute, while whorl section is depressed, subtrapezoidal with oblique flanks and broad and low venter, maximum width is at shoulder. Umbilicus is wide and deep. Sharp, fibulate ribs are dense, tuberculate and spined.[1]

References

  1. ^ a b c Kovács, Z. (2014). Toarcian Dactylioceratidae (Ammonitina) from the Gerecse Mts (Hungary). Hantkeniana, 9, 45-77.
  2. ^ M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.


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