pforams@mikrotax - Dentoglobigerina juxtabinaiensis

pforams@mikrotax - Dentoglobigerina juxtabinaiensis pforams@mikrotax - Dentoglobigerina juxtabinaiensis

Dentoglobigerina juxtabinaiensis

Classification: pf_cenozoic -> Globigerinidae -> Dentoglobigerina -> Dentoglobigerina juxtabinaiensis
Sister taxa: D. juxtabinaiensis, D. binaiensis, D. sellii, D. tapuriensis ⟩⟨ D. baroemoenensis, D. larmeui, D. galavisi ⟩⟨ D. altispira, D. globosa, D. globularis ⟩⟨ D. prasaepis, D. pseudovenezuelana, D. taci, D. tripartita, D. eotripartita, D. venezuelana, D. sp.

Taxonomy

Citation: Dentoglobigerina juxtabinaiensis Fox & Wade 2013

Taxonomic rank: species

Basionym: Dentoglobigerina juxtabinaiensis Fox & Wade 2013

Synonyms:

Globigerina binaiensis Koch.—Krasheninnikov and Hoskins, 1973:124, pl. 6, figs. 1-3 [lower Miocene Globigerinatella insueta – Globigerinita dissimilis Zone, DSDP Site 200, Ita Maitai Guyot, equatorial Pacific Ocean]. [Not Koch, 1935.]
Globoquadrina binaiensis Koch.—Spezzaferri, 1994:42 (partim), pl. 38, figs. 1a-d [lower Miocene Zone N5, ODP Hole 667A, equatorial Atlantic Ocean], pl. 42, figs. 4a-c [lower Miocene Zone N5, ODP Hole 709C, Mascarene Plateau, equatorial Indian Ocean]. [Not Koch, 1935.]
Globoquadrina dehiscens Chapman and others.—Chaisson and Leckie, 1993:159 (partim), pl. 9, fig. 14 [lower Miocene Zone N5, ODP Hole 806B, Ontong Java Plateau, western equatorial Pacific Ocean]. [Not Chapman and others, 1934].
Dentoglobigerina juxtabinaiensis Fox and Wade, 2013:399, figs. 6.1-6.5 [lower Miocene Subzone M5a, IODP Hole U1338B, equatorial Pacific Ocean], figs. 7.1, 7.5 [lower Miocene Zone M2/3, IODP Hole U1337A, equatorial Pacific Ocean], figs. 7.2, 7.6 [lower Miocene Zone N6/7, ODP Hole 871A, Limalok Guyot, Marshall Islands, western equatorial Pacific Ocean], fig. 7.3 [lower Miocene Zone M4, IODP Hole U1337A, equatorial Pacific Ocean], fig. 7.4 [lower Miocene Zone N4/5, ODP Hole 871A, Limalok Guyot, Marshall Islands, western equatorial Pacific Ocean].

Taxonomic discussion: This species is distinguished from D. binaiensis (Koch) by having 4 rather than 3 chambers in the final whorl, less rapid chamber expansion and a more open umbilicus.

Catalog entries: Dentoglobigerina juxtabinaiensis

Type images:

holotype: D. juxtabinaiensis
holotype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis
paratype: D. juxtabinaiensis

Distinguishing features:
Parent taxon (Dentoglobigerina): Trochospiral test with umbilically restricted aperture and usually one or more umbilical teeth
This taxon: Like D. binaiensis but with 4 rather than 3 chambers in the final whorl, less rapid chamber expansion and a more open umbilicus.

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

Description

Character matrix
test outline: Subcircular chamber arrangement: Trochospiral edge view: Concavo-convex aperture: Umbilical
sp chamber shape: Petaloid coiling axis: Moderate periphery: N/A aperture border: Thin flange
umb chbr shape: Globular umbilicus: Narrow periph margin shape: Broadly rounded accessory apertures: None
spiral sutures: Moderately depressed umb depth: Deep wall texture: Cancellate shell porosity: Finely Perforate: 1-2.5µm
umbilical or test sutures: Strongly depressed final-whorl chambers: 4-4 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Phylogenetic relations

It appears to have been descended from binaiensis and survived the extinction of that form. [Wade et al. 2018]

Most likely ancestor:
Dentoglobigerina binaiensis - at confidence level 3 (out of 5). Data source: Wade et al. 2018.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within M5 zone (15.10-16.38Ma, top in Langhian stage). Data source: Fox & Wade 2013
First occurrence (base): within M3 zone (17.54-19.30Ma, base in Burdigalian stage). Data source: Fox & Wade 2013

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Dentoglobigerina

Primary source for this page: Wade et al. 2018 - Olig Atlas chap.11 p.352;

References:

Chaisson, W. P. & Leckie, R. M. (1993). High-resolution Neogene planktonic foraminifer biostratigraphy of Site 806, Ontong Java Plateau (Western Equatorial Pacific). Proceedings of the Ocean Drilling Program, Scientific Results. 130: 137-178. gs

Chapman, F., Parr, W. J. & Collins, A. C. (1934). Tertiary foraminifera of Victoria, Australia - The Balcombian deposits of Port Phillip. part III. Zoological Journal of the Linnean Society. 38(262): 553-577. gs

Fox, L. R. & Wade, B. S. (2013). Systematic taxonomy of early–middle Miocene planktonic foraminifera from the equatorial Pacific Ocean: Integrated Ocean Drilling Program, Site U1338. Journal of Foraminiferal Research. 43: 374-405. gs

Koch, R. (1935). Namensanderung einiger Tertiar-Foraminiferen aus Niederlandisch Ost-Indien. Eclogae Geologicae Helvetiae. 28: 557-558. gs

Krasheninnikov, V. A. & Hoskins, R. H. (1973). Late Cretaceous, Paleogene and Neogene Planktonic Foraminifera. Initial Reports of the Deep Sea Drilling Project. 20: 105-203. gs

Spezzaferri, S. (1994). Planktonic foraminiferal biostratigraphy and taxonomy of the Oligocene and lower Miocene in the oceanic record. An overview. Palaeontographia Italica. 81: 1-187. gs

Wade, B. S., Pearson, P. N., Olsson, R. K., Fraass, A. J., Leckie, R. M. & Hemleben, C. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene and Lower Miocene Dentoglobigerina and Globoquadrina. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 46(Chap 11): 331-384. gs

Dentoglobigerina juxtabinaiensis compiled by the pforams@mikrotax project team viewed: 14-2-2026

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test outline:	Subcircular	chamber arrangement:	Trochospiral	edge view:	Concavo-convex	aperture:	Umbilical
sp chamber shape:	Petaloid	coiling axis:	Moderate	periphery:	N/A	aperture border:	Thin flange
umb chbr shape:	Globular	umbilicus:	Narrow	periph margin shape:	Broadly rounded	accessory apertures:	None
spiral sutures:	Moderately depressed	umb depth:	Deep	wall texture:	Cancellate	shell porosity:	Finely Perforate: 1-2.5µm
umbilical or test sutures:	Strongly depressed	final-whorl chambers:	4-4	N.B. These characters are used for advanced search. N/A - not applicable