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Turborotalita cristata Heron-Allen & Earland 1929 from: Quilty, P.G.. (1976): Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34
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Species Turborotalita cristata Heron-Allen & Earland 1929


Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test minute, very low trochospiral, loosely coiled, equatorial periphery distinctly lobulate; axial periphery rounded; chambers oval, radially elongate, seven in the final whorl; sutures on both spiral and umbilical side radial depressed; surface smooth, translucent, almost imperf orate to very finely perforate with short, conical spines concentrated along the periphery; aperture a low arch bordered by a thin lip, interiomarginal, umbilical-extraumbilical.
Discussion / Comments:
Kennett & Srinivasan (1983):
Ta. cristata can be distinguished from Ta. humilis by its radially elongate later chambers in the final whorl, short conical spines concentrated along the periphery, lack of large pores, and an absence of a tongue-like extension of the final chamber. Ta. cristata appears to have developed from Ta. humilis during the early Pleistocene.
Synonym list:
Kennett & Srinivasan (1983):
1929 Globigerina cristata Heron-Allen & Earland. - Heron-Allen & Earland : p.331 pl 4 figs 33-39
1960 Globigerina cristata Heron-Allen & Earland. - Banner & Blow : p.10 pl 7 fig 5 (lectotype)
Quilty (1976):
1929 Turborotalita cristata Heron-Allen & Earland. - Heron-Allen & Earland : p.665 pl. 94, figs. 7a-c
1960 Turborotalita cristata Heron-Allen & Earland. - Banner & Blow : p.10 pl. 10, figs. 1a-c
1976 Turborotalita cristata Heron-Allen & Earland. - Quilty : p.697 pl. 16, figs. 12-13
References:

Heron-Allen,E. and Earland,A. (1929):
Some new foraminifera from the South Atlantic . Journal of the Royal Microscopical Society, Ser. 3 Vol. 49

Banner,F.T. and Blow,W.H. (1960):
Some primary types of species belonging to the superfamily Globigerinaceae . Contributions from the Cushman Foundation for Foraminiferal Research Vol. 11(1) p. 1-41

Quilty,P.G.. (1976):
Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34

Kennett,J. and Srinivasan,M.S. (1983):
Neogene Planktonic Foraminifera - A Phylogenetic Atlas.

Anonymous: Unedited TaxonConcept data
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