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Ptychomaletoechia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Rhynchotrematoidea
Family:
Trigonirhynchiidae
Formal Genus Name and Reference:
Ptychomaletoechia SARTENAER, 1961c, p. 7
Type Species:
Rhynchonella Omaliusi GOSSELET, 1877b, p. 314, OD
Images
(Click to enlarge in a new window)
Fig. 724, 2a-i. *P. omaliusi (Gosselet), Famennian, Senzeilles beds, Senzeilles, Belgium, $a-$ $d$, lectotype, dorsal, ventral, anterior, and lateral views, x1$ (Gosselet, 1877b), e-f, topotype, serial sections $0.85, 1.15 \\mathrm{~mm}$ from posterior, x3.4, g-i$, serial sections $2.93, 3.08, 3.18 \\mathrm{~mm}$ from posterior of another topotype, x2.7$ (Sartenaer, 1961c).
Synonyms
Geographic Distribution
Europe, Afghanistan, Altai, China, North America
Age Range
Beginning Stage in Treatise Usage:
Upper Devonian (Famennian)
Beginning International Stage:
Famennian
Fraction Up In Beginning Stage:
0
Beginning Date:
371.1
Ending Stage in Treatise Usage:
Lower Carboniferous (Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Transversely subpentagonal outline, strongly dorsibiconvex with steep lateral margins. Beak erect to suberect, foramen circular, with deltidial plates disjunct to conjunct. Fold and sulcus distinct, from umbones, tongue high, rectangular, dentate. Costae strong, angular, simple, arising at beaks. Dental plates slightly convergent ventrally. Dorsal median septum low, long, septalium deep, without cover, crural bases triangular, crura closely placed, concave dorsomedially in section. Upper Devonian (Famennian)-Lower Carboniferous (Tournaisian): Europe, Afghanistan, Altai, China, North America.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Rhynchotrematoidea
Family:
Trigonirhynchiidae
Formal Genus Name and Reference:
Ptychomaletoechia SARTENAER, 1961c, p. 7
Type Species:
Rhynchonella Omaliusi GOSSELET, 1877b, p. 314, OD
Images
(Click to enlarge in a new window)
Fig. 724, 2a-i. *P. omaliusi (Gosselet), Famennian, Senzeilles beds, Senzeilles, Belgium, $a-$ $d$, lectotype, dorsal, ventral, anterior, and lateral views, x1$ (Gosselet, 1877b), e-f, topotype, serial sections $0.85, 1.15 \\mathrm{~mm}$ from posterior, x3.4, g-i$, serial sections $2.93, 3.08, 3.18 \\mathrm{~mm}$ from posterior of another topotype, x2.7$ (Sartenaer, 1961c).
Synonyms
Geographic Distribution
Europe, Afghanistan, Altai, China, North America
Age Range
Beginning Stage in Treatise Usage:
Upper Devonian (Famennian)
Beginning International Stage:
Famennian
Fraction Up In Beginning Stage:
0
Beginning Date:
371.1
Ending Stage in Treatise Usage:
Lower Carboniferous (Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Transversely subpentagonal outline, strongly dorsibiconvex with steep lateral margins. Beak erect to suberect, foramen circular, with deltidial plates disjunct to conjunct. Fold and sulcus distinct, from umbones, tongue high, rectangular, dentate. Costae strong, angular, simple, arising at beaks. Dental plates slightly convergent ventrally. Dorsal median septum low, long, septalium deep, without cover, crural bases triangular, crura closely placed, concave dorsomedially in section. Upper Devonian (Famennian)-Lower Carboniferous (Tournaisian): Europe, Afghanistan, Altai, China, North America.