Dactylioceratidae
| Dactylioceratidae Temporal range: early -middle Jurassic | |
|---|---|
| Scientific classification | |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ammonitida |
| Superfamily: | Eoderocerataceae |
| Family: | Dactylioceratidae Hyatt, 1867 |
The family Dactylioceratidae comprises Early to Middle Jurassic ammonite genera with ribbed and commonly tuberculate shells that resembled later Middle Jurassic stephanoceratids and Upper Jurassicperisphinctids. Shells may be either evolute or involute.
Evolution
It has been suggested, that this family is polyphyletic, but this is now considered to be false. Reynesocoeloceratinae evolved in lower Pliensbachian from Metaderoceras and died out in upper Pliensbachian. From this subfamily evolved in upper Pliensbachian Dactylioceratinae, that died out in upper Toarcian.[1]
Taxonomy
From Howarth 2013:
- Dactylioceratidae Hyatt, 1867
- Reynesocoeloceratinae Dommergues, 1986
- Reynesocoeloceras Géczy, 1976
- Bettoniceras Wiedenmayer, 1977
- Prodactylioceras Spath, 1923
- Cetonoceras Wiedenmayer, 1977
- Dactylioceratinae Hyatt, 1867
- Reynesoceras Spath, 1936
- Dactylioceras Hyatt, 1867
- Nodicoeloceras Buckman, 1926
- Peronoceras Hyatt, 1867
- Zugodactylites Buckman, 1926
- Porpoceras Buckman, 1911
- Septimaniceras Fauré, 2002
- Catacoeloceras Buckman, 1923
- Collina Bonarelli, 1893
- Reynesocoeloceratinae Dommergues, 1986
References
- ↑ M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.
- W. Arkell, et al, 1957. Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas, Press.
- Dactylioceratidae in fossilworks, 4/25/14
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