TaxonConcept: Globigerina calida calida Parker 1962 from: Bolli, H.M.Saunders, J.B. (1985): Oligocene to Holocene low latitude planktic foraminifers. In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262

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Globigerina calida calida Parker 1962 from: Bolli, H.M.Saunders, J.B. (1985): Oligocene to Holocene low latitude planktic foraminifers. In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262

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Subspecies Globigerina calida calida Parker 1962

Discussion / Comments:

Bolli & Saunders (1985):
Blow (1969), in an attempt 'to recognize the biostratigraphic value of the extreme morphological forms characterized by the holotype of Globigerina calida', restricted Parker's concept of her taxon, gave it subspecies rank and distinguished it from G. calida praecalida, which stratigraphically precedes G. calida calida. Compared with G. calida praecalida, the large sized (up to 0. 8 mm), low trochospiral and loosely coiled G. calida calida is characterized by a tendency towards radial elongation of the later chambers, in particular the final one, and thus approaches the condition seen in Beella. There is a tendency for the chambers forming the last whorl to become more numerous, often numbering 5 or, more rarely, 6. G. calida calida differs from G. bulloides in the radially more elongated chambers resulting in a more lobate equatorial periphery.
Iaccarino (1985):
Blow (1969), in an attempt 'to recognize the biostratigraphic value of the extreme morphological forms characterized by the holotype of Globigerina calida', restricted Parker's concept of her taxon, gave it subspecies rank and distinguished it from his G. calida praecalida, which stratigraphically precedes G. calida calida. Compared with G. calida praecalida, the large sized (up to 0.8 man), low trochospiral and loosely coiled G. calida calida is characterized by a tendency towards radial elongation of the later chambers, in particular the final one, and thus approaches the condition seen in Beella. There is a trend for the chambers forming the last whorl to become more numerous, often numbering 5 or, more rarely, 6. G. calida calida differs from G. bulloides in the radially more elongated chambers resulting in a more lobate equatorial periphery. Forms called G. aff. calida calida with intermediate morphological features between G. calida calida and G. calida praecalida have been observed within the Late Pliocene (Colalongo & Sartoni, 1977, pl. 12, fig. 2). These forms show more globular chambers, more open coiling and a more rapid increase in the size of the last chamber. The typical elongation of the last chamber is absent.

Synonym list:

Bolli & Saunders (1985):

1962 Globigerina calida Parker. - Parker : p.221 pl.1, figs.9a-c

1985 Globigerina calida calida Parker. - Bolli & Saunders : figs. 7,10 11; Chapter 8, Figure 5.13

Iaccarino (1985):

1962 Globigerina calida Parker. - Parker : p.221 figs. 9a-c

1985 Globigerina calida calida Parker. - Iaccarino : p.301 figs. 5.13a-c; 4

References:

Parker,F.L. (1962):
Planktonic foraminiferal species in Pacific sediments . Micropaleontology Vol. 8 p. 219-254

Bolli,H.M. and Saunders,J.B. (1985):
Oligocene to Holocene low latitude planktic foraminifers.
In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262

Iaccarino,S. (1985):
Mediterranean Miocene and Pliocene planktic foraminifera.
In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 283-314

Anonymous: Unedited TaxonConcept data

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