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Cambrooistodus
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Proconodontacea
Family:
Cordylododontidae
Formal Genus Name and Reference:
Cambrooistodus MILLER, 1980, p. 9
Type Species:
Oistodus cambricts MILLER, 1969, p. 431, OD
Images
(Click to enlarge in a new window)
Fig. 68, 2. *C.cambricus (Miller), USA (Texas), 2 a, b, asymmetrical element, lat. view and transv. sec., X55 (Miller, 1980).
Synonyms
Geographic Distribution
N.Am. (Utah-Nev.-Texas-Okla.-Alberta)
Age Range
Beginning Stage in Treatise Usage:
U.Cam. (Trempeal.)
Beginning International Stage:
Jiangshanian
Fraction Up In Beginning Stage:
87.5
Beginning Date:
491.4
Ending Stage in Treatise Usage:
U.Cam. (Trempeal.)
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
100
Ending Date:
486.85
Description
Inferred bimembrate apparatus, elements coniform, proclined to erect. Asymmetrical geniculate element distinctive, large to small, asymmetrical due to bending of cusp laterally, basal cavity very deep to shallow, cusp correspondingly short to long, composed of white matter, strongly compressed laterally, with prominent anterior and posterior keels, carina on concave side of base. Symmetrical nongeniculate element not distinctive, apparently not distinguishable from symmetrical element of Eoconodontus.
References
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Proconodontacea
Family:
Cordylododontidae
Formal Genus Name and Reference:
Cambrooistodus MILLER, 1980, p. 9
Type Species:
Oistodus cambricts MILLER, 1969, p. 431, OD
Images
(Click to enlarge in a new window)
Fig. 68, 2. *C.cambricus (Miller), USA (Texas), 2 a, b, asymmetrical element, lat. view and transv. sec., X55 (Miller, 1980).
Synonyms
Geographic Distribution
N.Am. (Utah-Nev.-Texas-Okla.-Alberta)
Age Range
Beginning Stage in Treatise Usage:
U.Cam. (Trempeal.)
Beginning International Stage:
Jiangshanian
Fraction Up In Beginning Stage:
87.5
Beginning Date:
491.4
Ending Stage in Treatise Usage:
U.Cam. (Trempeal.)
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
100
Ending Date:
486.85
Description
Inferred bimembrate apparatus, elements coniform, proclined to erect. Asymmetrical geniculate element distinctive, large to small, asymmetrical due to bending of cusp laterally, basal cavity very deep to shallow, cusp correspondingly short to long, composed of white matter, strongly compressed laterally, with prominent anterior and posterior keels, carina on concave side of base. Symmetrical nongeniculate element not distinctive, apparently not distinguishable from symmetrical element of Eoconodontus.