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Turborotalita praequinqueloba Hemleben & Olsson 2006 from: Pearson, P.N.Olsson, R.K.Hemleben, C.Huber, B.T.Berggren, W.A. (2006): Atlas of Eocene Planktonic Foraminifera. p. 1-513
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Anonymous: Unedited TaxonConcept data
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Species Turborotalita praequinqueloba Hemleben & Olsson 2006


Diagnosis / Definition:
Pearson et al. (2006):
DESCRIPTION. Type ofwall: Normal perforate, spinose, ruber-type, cancellate wall structure, covered by a crust in adult stage. Test morphology: Test very low trochospiral, lobulate in outline, chambers globular; in spiral view 4- 4 1/2 globular, slightly embracing chambers in ultimate whorl, increasing moderately in size, ultimate chamber sometimes reduced in size, sutures moderately depressed, straight; in umbilical view 4-41/2 globular, slightly embracing chambers increasing moderately in size, ampullate ultimate chamber often reduced and directed towards and over the umbilicus, sutures moderately depressed, straight, umbilicus small and often covered by ultimate chamber, aperture umbilical, a wide arch bordered by an imperforate rim or narrow thickened lip; in edge view chambers globular in shape, slightly embracing. Size: Maximum diameter of holotype 0.27 mm, thickness 0.13 mm.
Discussion / Comments:
Pearson et al. (2006):
ETYMOLOGY.- Named because it precedes the modem species Turborotalia quinqueloba matland). DISTINGUISHING FEATURES.- Turborotalita praequinqueloba n. sp. is characterized by its small, lobulate test, the umbilically directed ultimate chamber, and the ruber-type cancellate wall texture. DISCUSSION. Turborotalitapraequinqueloba n. sp. is relatively rare in late Eocene sediments. Workers may have overlooked it due to its small size, although poor preservation may play a part in its lack of recognition. PHYLOGENETIC RELATIONSHIPS.- Turborotalita praequinqueloba n. sp. is derived from 7: carcoselleensis by developing a more lobate test and a more fully developed Turborotalita-type wall texture. It is believed to be related to Turborotalita quinqueloba which ranges from the Oligocene to Recent due to close morphologic similarity. GEOGRAPHIC DISTRIBUTION.- Described from a low latitude locality. STABLE ISOTOPE PALEOBIOL0GY.- No data available.
Systematics:

35
 Ordo Foraminiferida
  Superfamilia Globigerinaceae
   Familia Globigerinidae
    Genus Turborotalita
     Species Turborotalita praequinqueloba
Synonym list:
Pearson et al. (2006):
2006 Turborotalita n sp. praequinqueloba Hemleben & Olsson. - Pearson et al. : p.156 pl. 6.20; fig. 1-21
Specimen:
Smithsonian Museum of Natural History, Washington, D.C., Inventory number: USNM 521873
Smithsonian Museum of Natural History, Washington, D.C., Inventory number: USNM 521874
References:

Pearson,P.N.; Olsson,R.K.; Hemleben,C.; Huber,B.T. and Berggren,W.A. (2006):
Atlas of Eocene Planktonic Foraminifera. p. 1-513
Anonymous: Unedited TaxonConcept data
Creative Commons Attribution 2.5 License
This work is licensed under a Creative Commons Attribution 2.5 License.