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Species Truncorotaloides collactea Finlay 1939


Discussion / Comments:
Toumarkine & Luterbacher (1985):
T. collactea differs from T. rohri in being much smaller, having a less spinose wall and a more compact test. T. collactea is dextrally coiled as opposed to the sinistrally coiled T. rohri. The small sutural apertures on the spiral side at the base of the final chamber occur only occasionally and are visible only in well-preserved specimens.
Jenkins (1985):
This small distinctive species occasionally has small sutural apertures on the spiral side at the base of the final chamber. T. collactea differs from T. rohri in being smaller, having a less spinose wall and a more compact test. It has been recorded from the Early to Late Eocene of New Zealand with a similar range at DSDP Leg 29 Site 277 (Jenkins, 1971, 1975). In South Australia T. collactea has only a short range in the Late Eocene (Lindsay, 1969).
Systematics:

15
 Classis Foraminifera
  Genus Truncorotaloides
   Species Truncorotaloides collactea

32
 Ordo Foraminiferida
  Familia Globorotaliidae
   Genus Truncorotaloides
    Species Truncorotaloides collactea
Synonym list:
Toumarkine & Luterbacher (1985):
1939 Globorotalia collactea Finlay. - Finlay : p.29 figs 164-165 (type reference)
1985 Truncorotaloides collactea Finlay. - Toumarkine & Luterbacher : p.132
Jenkins (1985):
1939 Globorotalia collactea Finlay. - Finlay : p.327 pl. 29, figs. 164-165
1985 Truncorotaloides collactea Finlay. - Jenkins : p.273 figs. 6.10; 5
Van Eijden & Smit (1991):
1939 Globorotalia collactea Finlay. - Finlay : p.327 pl. 29, figs. 164-165
1991 Truncorotaloides collactea Finlay. - Van Eijden & Smit : p.114
Was used in synonym list of:
Acarinina collactea Finlay 1939
References:

Finlay,H.J. (1939):
New Zealand foraminifera; key species in stratigraphy, No. 3 . Transactions of the Royal Society of New Zealand Vol. 69 p. 309-29

Finlay,H.J. (1939):
New Zealand foraminifera: key species in stratigraphy No. 2 . Trans. Proc. R. Soc. N.Z. Vol. 69 p. 89-128

Jenkins,D.G. (1985):
Southern mid-latitude Paleocene to Holocene planktic foraminifera.
In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 263-282

Toumarkine,M. and Luterbacher,H.P. (1985):
Paleocene and Eocene Planktic Foraminifera.
In: Plankton Stratigraphy p. 87-154

Van Eijden,A.J.M. and Smit,J. (1991):
Eastern Indian Ocean Cretaceous and Paleogene quantitative biostratigraphy.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 121 Eds: Weissel, J.Peirce, J.Taylor, E.Alt, J. p. 77-123
Anonymous: Unedited TaxonConcept data
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