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Hadrodontina
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Gondolellacea
Family:
Ellisoniidae
Formal Genus Name and Reference:
Hadrodontina STAESCHE, 1964, p. 271
Type Species:
H. anceps, OD
Images
(Click to enlarge in a new window)
Fig. 101, 1. *H. anceps, Eu.(Italy); la, Sa element, post. view; 1b, Sb element, post. view; 1e, M element, post. view; 1d, Pa element without secondary denticle row, inner·lat. view; 1e, Pa element with secondary denticle row, outer-lat. view; X47 (Sweet, n).
Synonyms
Geographic Distribution
Eu.-Middle East
Age Range
Beginning Stage in Treatise Usage:
L.Trias.
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
L.Trias.
Ending International Stage:
Olenekian
Fraction Up In Ending Stage:
100
Ending Date:
246.7
Description
Apparatus probably seximembrate, like that of Furnishius, but under sides of elements flattened rather than cuneiform, and dimorphic Pa element (=form-species H. biserialis Staesche, 1964) not pastinate but angulate, with secondary row of denticles on outer side parallel to main denticle series.
References
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Gondolellacea
Family:
Ellisoniidae
Formal Genus Name and Reference:
Hadrodontina STAESCHE, 1964, p. 271
Type Species:
H. anceps, OD
Images
(Click to enlarge in a new window)
Fig. 101, 1. *H. anceps, Eu.(Italy); la, Sa element, post. view; 1b, Sb element, post. view; 1e, M element, post. view; 1d, Pa element without secondary denticle row, inner·lat. view; 1e, Pa element with secondary denticle row, outer-lat. view; X47 (Sweet, n).
Synonyms
Geographic Distribution
Eu.-Middle East
Age Range
Beginning Stage in Treatise Usage:
L.Trias.
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
L.Trias.
Ending International Stage:
Olenekian
Fraction Up In Ending Stage:
100
Ending Date:
246.7
Description
Apparatus probably seximembrate, like that of Furnishius, but under sides of elements flattened rather than cuneiform, and dimorphic Pa element (=form-species H. biserialis Staesche, 1964) not pastinate but angulate, with secondary row of denticles on outer side parallel to main denticle series.