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Gladigondolella
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Gondolellacea
Family:
Ellisoniidae
Formal Genus Name and Reference:
Gladigondolella MÜLLER, 1962a, p. 116
Type Species:
Polygnathus tethydis HUCKRIEDE, 1958, OD
Images
(Click to enlarge in a new window)
Fig. 103, 1. *G. tethydis (Huckriede), M.Trias., Asia (Timor), 1a, lat. view, X34, 16, under side, X36 (Sweet, n)
Synonyms
Cratognathodus
Geographic Distribution
Trias., Eu.-Asia-N.Am.
Age Range
Beginning Stage in Treatise Usage:
Trias.
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
Trias.
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Apparatus apparently unimembrate, composed of anguliplanate elements with thick, coarsely pitted, adenticulate platform and, on under side, longitudinally grooved keel extending full length of element and expanding to form small basal pit slightly posterior of midlength. [KOZUR & MOSTLER (1971) concluded that the apparatus of G. tethydis was septimembrate; however, the array of nonplatformed elements they listed as components forms a complete and typical seximembrate apparatus of Ellisonia type. Because anguliplanate elements assignable on form to Gladigondolella intergrade morphologically with closely similar angulate elements assumed to have occupied Pa positions in Ellisonia apparatuses, and because anguliplanate elements do not always occur with the array of ramiform elements included in Gladigondolella by KOZUR & MOSTLER, it is concluded that Gladigondolella had a unimembrate apparatus, as ap-
parently did many other Permian and Triassic conodonts that developed from Ellisonia or Cypridodella.]
References
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Gondolellacea
Family:
Ellisoniidae
Formal Genus Name and Reference:
Gladigondolella MÜLLER, 1962a, p. 116
Type Species:
Polygnathus tethydis HUCKRIEDE, 1958, OD
Images
(Click to enlarge in a new window)
Fig. 103, 1. *G. tethydis (Huckriede), M.Trias., Asia (Timor), 1a, lat. view, X34, 16, under side, X36 (Sweet, n)
Synonyms
Cratognathodus
Geographic Distribution
Trias., Eu.-Asia-N.Am.
Age Range
Beginning Stage in Treatise Usage:
Trias.
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
Trias.
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Apparatus apparently unimembrate, composed of anguliplanate elements with thick, coarsely pitted, adenticulate platform and, on under side, longitudinally grooved keel extending full length of element and expanding to form small basal pit slightly posterior of midlength. [KOZUR & MOSTLER (1971) concluded that the apparatus of G. tethydis was septimembrate; however, the array of nonplatformed elements they listed as components forms a complete and typical seximembrate apparatus of Ellisonia type. Because anguliplanate elements assignable on form to Gladigondolella intergrade morphologically with closely similar angulate elements assumed to have occupied Pa positions in Ellisonia apparatuses, and because anguliplanate elements do not always occur with the array of ramiform elements included in Gladigondolella by KOZUR & MOSTLER, it is concluded that Gladigondolella had a unimembrate apparatus, as ap-
parently did many other Permian and Triassic conodonts that developed from Ellisonia or Cypridodella.]