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Howchinia
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Fusulinina
Superfamily:
Endothyracea
Family:
Lasiodiscidae
Formal Genus Name and Reference:
Howchinia CUSHMAN, 1927, *431, p. 42
Type Species:
Patellina bradyana HOWCHIN, 1888, *965, p. 544, OD
Images
(Click to enlarge in a new window)
Fig. 273,4,5. *H. bradyana (Howchin), Eng., 4, sectioned hypotype, X105, 5a-c, side, edge and apert. views of neotype, X105 (*2117). --Fig. 273,6. H. gibba (von Möller), USSR: X80 (*2009).
Synonyms
Monotaxis
Geographic Distribution
Eu.(Eng.-USSR)
Age Range
Beginning Stage in Treatise Usage:
L.Carb.(Visean)
Beginning International Stage:
Visean
Fraction Up In Beginning Stage:
0
Beginning Date:
346.73
Ending Stage in Treatise Usage:
L.Carb.(Visean)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
330.34
Description
Test free, conical, consisting of nonseptate tube coiled in high spire around slightly depressed umbilical region filled with microcrystalline calcite, spiral suture depressed, bridged by many small extensions of shell matter, leaving spiraling series of small pits between them, wall calcareous, minutely granular, aperture extending from umbilicus to periphery.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Fusulinina
Superfamily:
Endothyracea
Family:
Lasiodiscidae
Formal Genus Name and Reference:
Howchinia CUSHMAN, 1927, *431, p. 42
Type Species:
Patellina bradyana HOWCHIN, 1888, *965, p. 544, OD
Images
(Click to enlarge in a new window)
Fig. 273,4,5. *H. bradyana (Howchin), Eng., 4, sectioned hypotype, X105, 5a-c, side, edge and apert. views of neotype, X105 (*2117). --Fig. 273,6. H. gibba (von Möller), USSR: X80 (*2009).
Synonyms
Monotaxis
Geographic Distribution
Eu.(Eng.-USSR)
Age Range
Beginning Stage in Treatise Usage:
L.Carb.(Visean)
Beginning International Stage:
Visean
Fraction Up In Beginning Stage:
0
Beginning Date:
346.73
Ending Stage in Treatise Usage:
L.Carb.(Visean)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
330.34
Description
Test free, conical, consisting of nonseptate tube coiled in high spire around slightly depressed umbilical region filled with microcrystalline calcite, spiral suture depressed, bridged by many small extensions of shell matter, leaving spiraling series of small pits between them, wall calcareous, minutely granular, aperture extending from umbilicus to periphery.