Truncorotalia crassaformis

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Journal Article
Published: 11 January 2019
Journal of Foraminiferal Research (2019) 49 (1): 94–102.
...George H. Scott Abstract To clarify patterns of within-population variation in Truncorotalia crassaformis and their bearing on selection of a neotype, the shape of shells from two Caribbean sediment traps was analyzed statistically. These data were compared with those from a Holocene equatorial...
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Comparative images of  <b>Truncorotalia</b> <b>crassaformis</b>  and  T. crassacarina .  ...
Published: 11 January 2019
Figure 5. Comparative images of Truncorotalia crassaformis and T. crassacarina . 1a–e Globigerina crassaformis Galloway & Wissler, proposed neotype USNM PAL 720529, ‘Middle bed’ Lomita Quarry. 2a–b Globigerina crassaformis Galloway & Wissler, holotype AMNH 19816. 3–6
Variation in  <b>Truncorotalia</b> <b>crassaformis</b> , axial orientation.  1–3, 7–9  sp...
Published: 11 January 2019
Figure 3. Variation in Truncorotalia crassaformis , axial orientation. 1–3, 7–9 specimens in a scatter plot (Fig. 3.4) of principal component scores (PC1–3) from a generalized procrustes analysis of axial outline coordinates for the CB sample. Identified pins in Fig. 3.4 correspond
Variation in  <b>Truncorotalia</b> <b>crassaformis</b> , spiral orientation.  1–3, 7–9  S...
Published: 11 January 2019
Figure 4. Variation in Truncorotalia crassaformis , spiral orientation. 1–3, 7–9 Specimens in a scatter plot (Fig. 4.4) of principal component scores (PC1–3) from a generalized procrustes analysis of spiral outline coordinates for the CB sample. Identified pins in Fig. 4.4 correspond
Journal Article
Published: 29 October 2018
Journal of Foraminiferal Research (2018) 48 (4): 288–300.
... of Truncorotalia crassaformis . 26 July 2017 27 June 2018 The genus Truncorotalia Cushman & Bermúdez, 1949 includes species that are important for biostratigraphic subdivision of the Plio-Pleistocene in the southwest Pacific (Hornibrook, 1981, 1982; Kennett & Srinivasan, 1983...
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Truncorotalids with dense pseudospines on shell wall surfaces and low slit-...
Published: 29 October 2018
crassaconica s.s., FP5581 and FP5582, 1123B-13H-5, 90–94 cm (114.80 mbsf); D unkeeled, crust-free specimen of Truncorotalia crassaformis , FP5568, DSDP284-12R-1, 20 cm (103.90 mbsf).
Pustulose (pseudospinose) surface ultrastructure.  A–B  Outer umbilical wal...
Published: 29 October 2018
Figure 4. Pustulose (pseudospinose) surface ultrastructure. A–B Outer umbilical wall surface of last-formed chamber and apertural region in a crust-free specimen of Truncorotalia crassaformis , DSDP Site 284-12R-6, 20 cm (112.20 mbsf); C−D Outer umbilical wall surfaces of last-formed
Curvature of the final chamber.  A–B  maxA = location of maximum curvature,...
Published: 11 January 2019
chamber from the coiling axis. C–K Distribution of maxA for CB, GM, and ETA samples of Truncorotalia crassaformis and comparative specimens. L–M Histograms of area (in pixel units) enclosed by the spiral outline of shells in the CB and GM samples.
Journal Article
Published: 23 October 2019
Journal of Foraminiferal Research (2019) 49 (4): 459–460.
... in the Famennian Stage (Upper Devonian) of Tajikistan………v. 49, no. 2, p. 163–177. Scott, G. H., Recognition of Truncorotalia crassaformis as a modern planktonic foraminiferal morphospecies in the Caribbean and Equatorial Atlantic Ocean and proposal of a neotype………v. 49, no. 1, p. 94–102. Smith, C. W...
Journal Article
Published: 22 December 2016
Journal of Micropalaeontology (2017) 36 (2): 191–194.
... conglobatus 774 60   Globigerina bulloides Globigerina bulloides 675 31   Pulleniatina obliquiloculata Pulleniatina obliquiloculata 619 67   Sphaeroidinella dehiscens Sphaeroidinella dehiscens 476 41   Globorotalia crassaformis Truncorotalia crassaformis 311 27...
Journal Article
Journal: Paleobiology
Published: 01 January 2001
Paleobiology (2001) 27 (1): 104–125.
...-coiling) or counterclockwise (left-coiling) direction. This species originated between 2.8 and 2.3 Ma in subtropical areas of the South Pacific as a descendant from G. crassaformis ( Hills and Thierstein 1989 ; Lazarus et al. 1995 ). Its morphology diversified and significant phyletic change occurred...
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Journal Article
Published: 01 December 2003
Journal of the Geological Society (2003) 160 (6): 971–983.
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Journal Article
Published: 01 January 2013
Bulletin de la Société Géologique de France (2013) 184 (1-2): 21–34.
... age as indicated by the co-occurrence of Sphaeroidinellopsis seminulina and Truncorotalia crassaformis [Pl2-Pl3 foraminiferal zones of Berggren et al ., 1995 ; 4.31-3.13 Ma; calibrated ages from Lourens et al ., 2004 ]. This result agrees with that of Westercamp [1980] and clearly suggests...
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Journal Article
Published: 01 April 2020
Journal of Foraminiferal Research (2020) 50 (2): 111–127.
..., Globorotalia tumida , and Pulleniatina group) during the Pliocene. The deeper water fauna of the Globorotalia ( Truncorotalia ) group showed maximum abundance during the late Quaternary in this section. The thermocline species Pulleniatina spectabilis , which evolved from Pulleniatina primalis during...
Series: AAPG Studies in Geology
Published: 01 January 2009
DOI: 10.1306/13141062St583328
EISBN: 9781629810300
..., calcareous clay. The fauna is poor and contains radiolaria of Tertiary aspect, Globigerina sp., Amphistegina sp., Globorotalia centralis, Truncorotalia spp., Globigerina cf. apertura, Globigerina spp., and orbitoidal foraminifera, indicating an upper Eocene or slightly older age. The stratigraphic...