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Peronoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Eoderocerataceae
Family:
Dactylioceratidae
Formal Genus Name and Reference:
Peronoceras HYATT, 1867
Type Species:
Am. fibulatus J.deC. Sowerby, 1823, SD BUCKMAN, 1911
Images
(Click to enlarge in a new window)
Fig. 286,2. *P. fibulatum (Sow.), Eng., 2 a, b, X0.7 (65*)
Synonyms
Porpoceras
Geographic Distribution
Eu.-N.Afr.-Cauc.-Baluch.-Japan-NE.Sib.-Transbaikal-N.Alaska-Can.
Age Range
Beginning Stage in Treatise Usage:
L.Toarc.
Beginning International Stage:
Toarcian
Fraction Up In Beginning Stage:
0
Beginning Date:
184.2
Ending Stage in Treatise Usage:
L.Toarc.
Ending International Stage:
Toarcian
Fraction Up In Ending Stage:
50
Ending Date:
179.45
Description
Like Dactylioceras but with variable proportion of ribs looped in pairs to a ventrolateral tubercle or spine
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Eoderocerataceae
Family:
Dactylioceratidae
Formal Genus Name and Reference:
Peronoceras HYATT, 1867
Type Species:
Am. fibulatus J.deC. Sowerby, 1823, SD BUCKMAN, 1911
Images
(Click to enlarge in a new window)
Fig. 286,2. *P. fibulatum (Sow.), Eng., 2 a, b, X0.7 (65*)
Synonyms
Porpoceras
Geographic Distribution
Eu.-N.Afr.-Cauc.-Baluch.-Japan-NE.Sib.-Transbaikal-N.Alaska-Can.
Age Range
Beginning Stage in Treatise Usage:
L.Toarc.
Beginning International Stage:
Toarcian
Fraction Up In Beginning Stage:
0
Beginning Date:
184.2
Ending Stage in Treatise Usage:
L.Toarc.
Ending International Stage:
Toarcian
Fraction Up In Ending Stage:
50
Ending Date:
179.45
Description
Like Dactylioceras but with variable proportion of ribs looped in pairs to a ventrolateral tubercle or spine