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Tomasina
Classification
Phylum:
Brachiopoda
Subphylum:
Linguliformea
Class:
Lingulata
Order:
Lingulida
Superfamily:
Linguloidea
Family:
Linguloidea - Family uncertain
Formal Genus Name and Reference:
Tomasina Hall & CLARKE, 1892, p. 65
Type Species:
Lingula criei Davidson in GUILLIER, 1881, p. 372, OD
Images
(Click to enlarge in a new window)
Fig. 37, 2a, b. *T. criei (DavidSON), Sarthe, latex cast of ventral valve external mold, posterior view of pseudointerarea, x1.2 (Rowell, 1965a).
Synonyms
Tomasina
Geographic Distribution
France, Great Britain
Age Range
Beginning Stage in Treatise Usage:
Ordovician (Arenig)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Ordovician (Arenig)
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Shell elongate subrectangular, ventral beak distinctly elevated above plane of commissure, triangular opening beneath beak
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Linguliformea
Class:
Lingulata
Order:
Lingulida
Superfamily:
Linguloidea
Family:
Linguloidea - Family uncertain
Formal Genus Name and Reference:
Tomasina Hall & CLARKE, 1892, p. 65
Type Species:
Lingula criei Davidson in GUILLIER, 1881, p. 372, OD
Images
(Click to enlarge in a new window)
Fig. 37, 2a, b. *T. criei (DavidSON), Sarthe, latex cast of ventral valve external mold, posterior view of pseudointerarea, x1.2 (Rowell, 1965a).
Synonyms
Tomasina
Geographic Distribution
France, Great Britain
Age Range
Beginning Stage in Treatise Usage:
Ordovician (Arenig)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Ordovician (Arenig)
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Shell elongate subrectangular, ventral beak distinctly elevated above plane of commissure, triangular opening beneath beak