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Micromitra
Classification
Phylum:
Brachiopoda
Subphylum:
Linguliformea
Class:
Paterinata
Order:
Paterinida
Superfamily:
Paterinoidea
Family:
Paterinidae
Formal Genus Name and Reference:
Micromitra MEEK, 1873, p. 479
Type Species:
Iphidea sculptilis МЕEK, 1873, p. 479, OD
Images
(Click to enlarge in a new window)
Fig . 83,3a–d. *M. sculptilis (M EEK ), Gallatin County, Montana; a, holotype, ventral valve exterior, USNM 7864a, ×10; b, posterior view of conjoined valves, UM 20818a, × 10; c, ventral valve exterior, normal view, × 10; d, ventral valve exterior, detail of ornament, UM 20814a, × 15 (new).
Synonyms
Iphidella
Geographic Distribution
Sweden, England, Yunnan, Anhui, British Columbia, Northwest Territories, Nova Scotia, Lower Cambrian; Siberia, Tien Shan, Kazakhstan, Kirghizia, Idaho, Montana, Nevada, Utah, Mexico, Greenland, Denmark (Bornholm), northeastern China, Inner Mongolia, Ningxia, Korea, New Zealand, Queensland, Northern Territory, New South Wales, Amgaian; Russian Asia, Antarctica, Missouri, Pennsylvania, Wyoming, Upper Cambrian
Age Range
Beginning Stage in Treatise Usage:
Lower Cambrian
Beginning International Stage:
Fortunian
Fraction Up In Beginning Stage:
0
Beginning Date:
538.8
Ending Stage in Treatise Usage:
Upper Cambrian
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
100
Ending Date:
486.85
Description
Transversely ovate to subcircular, ventribiconvex, hinge line nearly straight, ventral pseudointerarea variably defined, high, apsacline, catacline or procline, homeodeltidium small to large, dorsal pseudointerarea usually well defined, low, anacline to catacline, homeochilidium small, apical, ornament of sharply defined, evenly spaced concentric fila, with or without fine radial costellae, which in some species break up the concentric fila into short segments that are usually convex adapically
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Linguliformea
Class:
Paterinata
Order:
Paterinida
Superfamily:
Paterinoidea
Family:
Paterinidae
Formal Genus Name and Reference:
Micromitra MEEK, 1873, p. 479
Type Species:
Iphidea sculptilis МЕEK, 1873, p. 479, OD
Images
(Click to enlarge in a new window)
Fig . 83,3a–d. *M. sculptilis (M EEK ), Gallatin County, Montana; a, holotype, ventral valve exterior, USNM 7864a, ×10; b, posterior view of conjoined valves, UM 20818a, × 10; c, ventral valve exterior, normal view, × 10; d, ventral valve exterior, detail of ornament, UM 20814a, × 15 (new).
Synonyms
Iphidella
Geographic Distribution
Sweden, England, Yunnan, Anhui, British Columbia, Northwest Territories, Nova Scotia, Lower Cambrian; Siberia, Tien Shan, Kazakhstan, Kirghizia, Idaho, Montana, Nevada, Utah, Mexico, Greenland, Denmark (Bornholm), northeastern China, Inner Mongolia, Ningxia, Korea, New Zealand, Queensland, Northern Territory, New South Wales, Amgaian; Russian Asia, Antarctica, Missouri, Pennsylvania, Wyoming, Upper Cambrian
Age Range
Beginning Stage in Treatise Usage:
Lower Cambrian
Beginning International Stage:
Fortunian
Fraction Up In Beginning Stage:
0
Beginning Date:
538.8
Ending Stage in Treatise Usage:
Upper Cambrian
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
100
Ending Date:
486.85
Description
Transversely ovate to subcircular, ventribiconvex, hinge line nearly straight, ventral pseudointerarea variably defined, high, apsacline, catacline or procline, homeodeltidium small to large, dorsal pseudointerarea usually well defined, low, anacline to catacline, homeochilidium small, apical, ornament of sharply defined, evenly spaced concentric fila, with or without fine radial costellae, which in some species break up the concentric fila into short segments that are usually convex adapically