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Tomasina
Classification
Phylum:
Brachiopoda
Class:
Lingulata
Order:
Lingulida
Superfamily:
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
Class:
Lingulata
Order:
Lingulida
Superfamily:
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