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Apsidognathus
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Prioniodontacea
Family:
Pterospathodontidae
Formal Genus Name and Reference:
Apsidognathus WALLISER, 1964, p. 29
Type Species:
*A. tuberculatus, OD
Images
(Click to enlarge in a new window)
Fig. 83, 3. *A. tuberculatus, Pterospathodus celloni Z., Eu. (Aus., Carnic Alps), 3a, holotype, Pa element, upper view, 3 b, c, Pb element, lat. and oblique-upper views, 3 d-f, arched scaphate element, lat., upper, and lower views, X27 (Walliser, 1964).
Synonyms
Astrognathus
Geographic Distribution
Eu.-Asia-N.Am.
Age Range
Beginning Stage in Treatise Usage:
Sil. (Llandov.)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Sil. (Llandov.)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
100
Ending Date:
432.93
Description
Pastiniscaphate Pa element like that of Astropentagnathus but with bifurcate lateral processes on both sides and more fully developed platform between processes, Pb element anguliplanate with well-developed platform having concentric ridges like that of Pa element, Homology of arched, scaphate element with two lateral carinae unclear; originally described as Pygodus lyra by WALLISER, 1964. [Reconsuuction: WALLlSER, 1972, p. 76; ALDRIDGE, 1974, p. 299, suggested inelusion of the Pb element, Ambalodus galerus WALLISER. An additional element may be the type species of Apsidognathus, A. lelractis.]
References
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Prioniodontacea
Family:
Pterospathodontidae
Formal Genus Name and Reference:
Apsidognathus WALLISER, 1964, p. 29
Type Species:
*A. tuberculatus, OD
Images
(Click to enlarge in a new window)
Fig. 83, 3. *A. tuberculatus, Pterospathodus celloni Z., Eu. (Aus., Carnic Alps), 3a, holotype, Pa element, upper view, 3 b, c, Pb element, lat. and oblique-upper views, 3 d-f, arched scaphate element, lat., upper, and lower views, X27 (Walliser, 1964).
Synonyms
Astrognathus
Geographic Distribution
Eu.-Asia-N.Am.
Age Range
Beginning Stage in Treatise Usage:
Sil. (Llandov.)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Sil. (Llandov.)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
100
Ending Date:
432.93
Description
Pastiniscaphate Pa element like that of Astropentagnathus but with bifurcate lateral processes on both sides and more fully developed platform between processes, Pb element anguliplanate with well-developed platform having concentric ridges like that of Pa element, Homology of arched, scaphate element with two lateral carinae unclear; originally described as Pygodus lyra by WALLISER, 1964. [Reconsuuction: WALLlSER, 1972, p. 76; ALDRIDGE, 1974, p. 299, suggested inelusion of the Pb element, Ambalodus galerus WALLISER. An additional element may be the type species of Apsidognathus, A. lelractis.]