Welcome to the Forams subsite on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Valvulinella
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Fusulinina
Superfamily:
Endothyracea
Family:
Tetrataxidae
Formal Genus Name and Reference:
Valvulinella Schubert, 1907, *1687, p. 248
Type Species:
Valvulina youngi Brady, 1876, *193, p. 86, SD Schubert, 1908, *1686, p. 379
Images
(Click to enlarge in a new window)
Fig. 253, 2-4. *V. youngi (BRADY), L.Carb., Eng.; 2, long. sec. (*193, pI. 4. fig. 8), X47 (*2117); 3, transv. sec. (*193, pI. 4, fig. 9), X47 (*2117); 4a-c, spiral. umbilical. and edge views, X65 (*2117).
Synonyms
Valvulinella
Geographic Distribution
Eu.-N.Am.
Age Range
Beginning Stage in Treatise Usage:
L.Carb.(Miss.)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
U.Carb.(Penn.)
Ending International Stage:
Gzhelian
Fraction Up In Ending Stage:
100
Ending Date:
298.89
Description
Test conical, chambers trochospirally arranged with only 2 or 3 chambers to whorl; interior subdivided by horizontal and vertical partitions, chamberlets slightly visible through outer wall; wall calcareous, micro-granular; aperture interiomarginal, on umbilical side. [Differs from Tetrataxis in having secondary partitions which form numerous tiny chamberlets. The Jurassic species previously assigned to Valvulinella are here placed in Kurnubia. The lecto-type (BMNH-P41656) and paratypes (BMNH- P35519, P35520, P41655) are from the Carboniferous, Brocklel', Lanarkshire, England.]
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Fusulinina
Superfamily:
Endothyracea
Family:
Tetrataxidae
Formal Genus Name and Reference:
Valvulinella Schubert, 1907, *1687, p. 248
Type Species:
Valvulina youngi Brady, 1876, *193, p. 86, SD Schubert, 1908, *1686, p. 379
Images
(Click to enlarge in a new window)
Fig. 253, 2-4. *V. youngi (BRADY), L.Carb., Eng.; 2, long. sec. (*193, pI. 4. fig. 8), X47 (*2117); 3, transv. sec. (*193, pI. 4, fig. 9), X47 (*2117); 4a-c, spiral. umbilical. and edge views, X65 (*2117).
Synonyms
Valvulinella
Geographic Distribution
Eu.-N.Am.
Age Range
Beginning Stage in Treatise Usage:
L.Carb.(Miss.)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
U.Carb.(Penn.)
Ending International Stage:
Gzhelian
Fraction Up In Ending Stage:
100
Ending Date:
298.89
Description
Test conical, chambers trochospirally arranged with only 2 or 3 chambers to whorl; interior subdivided by horizontal and vertical partitions, chamberlets slightly visible through outer wall; wall calcareous, micro-granular; aperture interiomarginal, on umbilical side. [Differs from Tetrataxis in having secondary partitions which form numerous tiny chamberlets. The Jurassic species previously assigned to Valvulinella are here placed in Kurnubia. The lecto-type (BMNH-P41656) and paratypes (BMNH- P35519, P35520, P41655) are from the Carboniferous, Brocklel', Lanarkshire, England.]