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Kochiproductus
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productidae
Formal Genus Name and Reference:
Kochiproductus DUNBAR, 1955, p. 107
Type Species:
Productus porrectus Kutorga, 1844, p. 96, SD Muir-Wood & COOPER, 1960, p. 260
Images
(Click to enlarge in a new window)
Fig. 338, 2a-e. K. peruvianus (d'Orbigny), Lower Permian, Hueco Formation, Texas, $a-d$, shell viewed ventrally, posteriorly, laterally, dorsally, × 0.75; e, dorsal valve interior, × 1 (Muir-Wood & Cooper, 1960).
Synonyms
Tschernyschewiella
Geographic Distribution
Arctic regions, Mongolia, North and South America
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (Asselian)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Lower Permian (?lower Sakmarian)
Ending International Stage:
Sakmarian
Fraction Up In Ending Stage:
50
Ending Date:
292.02
Description
"Medium to large, with large ears, commonly with anterolateral flange, ribbing weak on ventral valve, accentuated by closely spaced elongate spine bases, rugae more prominent on dorsal valve, spines recumbent from swollen bases, semierect on ears and ventral trail, cover dorsal valve, low ventral median ridge from umbo to anterior of muscle field, cardinal ridges long, buttress plates with pit in adults."
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productidae
Formal Genus Name and Reference:
Kochiproductus DUNBAR, 1955, p. 107
Type Species:
Productus porrectus Kutorga, 1844, p. 96, SD Muir-Wood & COOPER, 1960, p. 260
Images
(Click to enlarge in a new window)
Fig. 338, 2a-e. K. peruvianus (d'Orbigny), Lower Permian, Hueco Formation, Texas, $a-d$, shell viewed ventrally, posteriorly, laterally, dorsally, × 0.75; e, dorsal valve interior, × 1 (Muir-Wood & Cooper, 1960).
Synonyms
Tschernyschewiella
Geographic Distribution
Arctic regions, Mongolia, North and South America
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (Asselian)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Lower Permian (?lower Sakmarian)
Ending International Stage:
Sakmarian
Fraction Up In Ending Stage:
50
Ending Date:
292.02
Description
"Medium to large, with large ears, commonly with anterolateral flange, ribbing weak on ventral valve, accentuated by closely spaced elongate spine bases, rugae more prominent on dorsal valve, spines recumbent from swollen bases, semierect on ears and ventral trail, cover dorsal valve, low ventral median ridge from umbo to anterior of muscle field, cardinal ridges long, buttress plates with pit in adults."