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Ammodiscus
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Ammodiscacea
Family:
Ammodiscidae
Subfamily:
Ammodiscinae
Formal Genus Name and Reference:
Ammodiscus Reuss, 1862, *1552, p. 365
Type Species:
Ammodiscus infimus Bornemann, 1874, *174, p. 725 (non Orbis infimus Strickland, 1846), = Involutina silicea Terquem, 1862, *1883, p. 450, SD Loeblich & Tappan, 1954, *1165, p. 306, Gerke, 1960, *781, p. 7, Loeblich & TAPPAN, 1961, *1176, p. 191
Images
(Click to enlarge in a new window)
Fig. 122,1. * A. siliceus (Terquem), L.Jur.(Lias.), Fr., 1 a, b, side and edge views of lectotype, X44 (*1165). --Fig. 122.2. A. biftura (Ireland), Sil., USA (Okla.), X53 (*976)
Synonyms
Arammodiscum
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Sil.
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, discoidal, proloculus followed by undivided planispirally enrolled tubular chamber, which may show transverse growth constrictions but no internal partitions, wall agglutinated, aperture at open end of tubular chamber
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Ammodiscacea
Family:
Ammodiscidae
Subfamily:
Ammodiscinae
Formal Genus Name and Reference:
Ammodiscus Reuss, 1862, *1552, p. 365
Type Species:
Ammodiscus infimus Bornemann, 1874, *174, p. 725 (non Orbis infimus Strickland, 1846), = Involutina silicea Terquem, 1862, *1883, p. 450, SD Loeblich & Tappan, 1954, *1165, p. 306, Gerke, 1960, *781, p. 7, Loeblich & TAPPAN, 1961, *1176, p. 191
Images
(Click to enlarge in a new window)
Fig. 122,1. * A. siliceus (Terquem), L.Jur.(Lias.), Fr., 1 a, b, side and edge views of lectotype, X44 (*1165). --Fig. 122.2. A. biftura (Ireland), Sil., USA (Okla.), X53 (*976)
Synonyms
Arammodiscum
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Sil.
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, discoidal, proloculus followed by undivided planispirally enrolled tubular chamber, which may show transverse growth constrictions but no internal partitions, wall agglutinated, aperture at open end of tubular chamber