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Spiroplectammina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Textulariidae
Subfamily:
Spiroplectammininae
Formal Genus Name and Reference:
Spiroplectammina CUSHMAN, 1927, *431, p. 23
Type Species:
Textularia agglutinans d'Orbigny var. biformis Parker & JONES, 1865, *1418, p. 370, OD
Images
(Click to enlarge in a new window)
Fig. 163, 1. *S. biformis (Parker & Jones), Rec., Alaska (Chukchi Sea), 1 a, b, side, top views, X100 (*1162).
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Carb.
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, elongate, early portion in planispiral coil of few chambers, later chambers biserially arranged, wall agglutinated, aperture low arch at inner margin of final chamber. [Spiroplectammina differs from Textularia in having a distinct and well-developed initial coil. The lectotype of Textularia agglutinans var. bi/ormis PARKER & JONES is here designated (BMNH-ZF 3639, ex 94.4.3.194, at 60-70 fathoms off Hunde Island, Davis Straits).]
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Textulariidae
Subfamily:
Spiroplectammininae
Formal Genus Name and Reference:
Spiroplectammina CUSHMAN, 1927, *431, p. 23
Type Species:
Textularia agglutinans d'Orbigny var. biformis Parker & JONES, 1865, *1418, p. 370, OD
Images
(Click to enlarge in a new window)
Fig. 163, 1. *S. biformis (Parker & Jones), Rec., Alaska (Chukchi Sea), 1 a, b, side, top views, X100 (*1162).
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Carb.
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, elongate, early portion in planispiral coil of few chambers, later chambers biserially arranged, wall agglutinated, aperture low arch at inner margin of final chamber. [Spiroplectammina differs from Textularia in having a distinct and well-developed initial coil. The lectotype of Textularia agglutinans var. bi/ormis PARKER & JONES is here designated (BMNH-ZF 3639, ex 94.4.3.194, at 60-70 fathoms off Hunde Island, Davis Straits).]