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Harpoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Hildocerataceae
Family:
Hildoceratidae
Subfamily:
Harpoceratinae
Formal Genus Name and Reference:
Harpoceras WAAGEN, 1869
Type Species:
Am. falcifer J.SOWERBY , 1820; SD ARKELL, 1951 (validated ICZN Opinion 363, 1954)
Images
(Click to enlarge in a new window)
Fig. 289,1. °H. (H.) falcifer (Sow.), Eng.; 1a,b, holotype, X0.7 (65°)
Synonyms
Falciferites, Tardarpoceras, Phalllarpites
Geographic Distribution
Eu.-N.Afr.-Cauc.-Japan-Indon.-Can.-Ore.- Nev.-Chile-Ar
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
Sides flat, umbilical edge sharp, venter unicarinate, ribbing falcate, stronger on outer half on whorl sides than on inner.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Hildocerataceae
Family:
Hildoceratidae
Subfamily:
Harpoceratinae
Formal Genus Name and Reference:
Harpoceras WAAGEN, 1869
Type Species:
Am. falcifer J.SOWERBY , 1820; SD ARKELL, 1951 (validated ICZN Opinion 363, 1954)
Images
(Click to enlarge in a new window)
Fig. 289,1. °H. (H.) falcifer (Sow.), Eng.; 1a,b, holotype, X0.7 (65°)
Synonyms
Falciferites, Tardarpoceras, Phalllarpites
Geographic Distribution
Eu.-N.Afr.-Cauc.-Japan-Indon.-Can.-Ore.- Nev.-Chile-Ar
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
Sides flat, umbilical edge sharp, venter unicarinate, ribbing falcate, stronger on outer half on whorl sides than on inner.