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Pseudorbitoides
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Orbitoidacea
Family:
Pseudorbitoididae
Formal Genus Name and Reference:
Pseudorbitoides H. DOUVILLÉ, 1922, *624, p. 204
Type Species:
P. trechmanni, OD
Images
(Click to enlarge in a new window)
Fig. 593,1a,b. *P. trechmanni, Jamaica, la,b, equat. and vert. secs. of microspheric specimens, X40 (*2123). -- Fig. 593,1c,d. P. israelskyi Vaughan & Cole, usa (La.), 1c,d, equat. and vert. secs. of megalospheric specimens, X40 (*2123)
Synonyms
Historbitoides
Geographic Distribution
Carib. (Jamaica)New Guinea-N.Am.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Embryonic chambers of microspheric generation forming distinct spire followed by arcuate equatorial chambers which are succeeded by radial plates, embryonic chambers of megalospheric form bilocular, with 2 or more periembryonic chambers forming irregular spire succeeded by radial plates which extend to periphery; lateral chambers well developed, resting directly on radial plates.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Orbitoidacea
Family:
Pseudorbitoididae
Formal Genus Name and Reference:
Pseudorbitoides H. DOUVILLÉ, 1922, *624, p. 204
Type Species:
P. trechmanni, OD
Images
(Click to enlarge in a new window)
Fig. 593,1a,b. *P. trechmanni, Jamaica, la,b, equat. and vert. secs. of microspheric specimens, X40 (*2123). -- Fig. 593,1c,d. P. israelskyi Vaughan & Cole, usa (La.), 1c,d, equat. and vert. secs. of megalospheric specimens, X40 (*2123)
Synonyms
Historbitoides
Geographic Distribution
Carib. (Jamaica)New Guinea-N.Am.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Embryonic chambers of microspheric generation forming distinct spire followed by arcuate equatorial chambers which are succeeded by radial plates, embryonic chambers of megalospheric form bilocular, with 2 or more periembryonic chambers forming irregular spire succeeded by radial plates which extend to periphery; lateral chambers well developed, resting directly on radial plates.