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Praeorbulina

Globigerinidae

Taxonomy
Praeorbulina was named by Olsson (1964) [Sepkoski's age data: T Mi-l-u T Mi-m]. It is not extant.

It was assigned to Globigerinidae by Olsson (1964), Gibson (1983); and to Foraminiferida by Sepkoski (2002).

Synonymy list
YearName and author
1964Praeorbulina Olsson
1983Praeorbulina Gibson p. 368
2002Praeorbulina Sepkoski

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RankNameAuthor
kingdomChromistaCavalier-Smith 1981
subkingdomRhizaria()
phylumForaminifera(Eichwald 1830)
RankNameAuthor
superfamilyGlobigerinoidea
familyGlobigerinidaeCarpenter et al. 1862
genusPraeorbulina

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Praeorbulina Olsson 1964
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†Praeorbulina curva Blow 1956
†Praeorbulina glomerosadup Fraass et al. 2024
Invalid names: Globigerinoides glomerosa glomerosa Blow 1956 [invalid subgroup]
Diagnosis
ReferenceDiagnosis
R. K. Olsson 1964Low trochospiral with strongly enveloping final chamber, globular to spherical; peripheral outline rounder, slightly lobate to circular. Wall: rather coarsely perforate. Chambers: very much inflated, globular or spherical, increasing rapidly in size; three to four in a whorl in early portion of the test, somewhat embracing so that the initial portion of the test has a rounded appearance; final chamber much inflated, embracing the earlier portion of the test from 40 to over 75 percent. Sutures: slightly depressed to flush with the surface. Apertures: umbilical on the initial whorl of chambers; numerous, long to short narrow slits or very small circular openings situated along the sutural contact between the ultimate chamber and the previous chambers, may also be present along sutural contacts of earlier-formed chambers.
Measurements
No measurements are available
Locomotion: stationaryo
Life habit: semi-infaunalo
Diet: omnivoreo
Created: 2007-11-28 00:47:02
Modified: 2009-05-20 05:31:44
Source: o = order
Reference: Kiessling 2004

Age range: base of the Oligocene to the top of the C2An.1n or 33.90000 to 2.61000 Ma

Collections (80 total)


Time interval Ma Country or state Original ID and collection number
Oligocene33.9 - 23.04North Pacific P. sp. (253823 253825) P. sp., P. circularis (254697)
Early/Lower Miocene23.04 - 15.98North Pacific P. curva (267776 267777) P. curva, P. circularis, P. glomerosa (246130) P. glomerosa (246128)
Early/Lower Miocene23.04 - 15.98South Pacific P. glomerosa, P. curva (249247)
Early/Lower Miocene - Middle Miocene23.04 - 11.63North Pacific P. glomerosa (246127 267775) P. glomerosa, P. curva (267774)
Miocene23.04 - 5.333North Pacific P. sp. (254674)
Miocene23.04 - 5.333Indian Ocean P. glomerosa (257563 257567 257568 258408 258415)
Miocene23.04 - 5.333South Pacific P. curva (251910) P. glomerosa (268992)
Neogene23.04 - 2.58South Pacific P. transitoria (268259)
NN222.75 - 19.2North Pacific P. sp. (249753)
Burdigalian20.45 - 15.98North Pacific P. curva (270492) P. glomerosa (272813) P. spp. (270954)
Burdigalian - Langhian20.45 - 13.82Malaysia Globigerinoides transitoria (165770)
Burdigalian - Langhian20.45 - 13.82North Pacific P. glomerosa, P. curva (270491)
NN418.0 - 14.9North Pacific P. circularis (252774) P. glomerosa, P. circularis (249739 253089 253090) P. glomerosa, P. sp. (249743) P. glomerosa, P. sp., P. circularis (249740 249741 249742) P. sp. (249744 249745 249746 249748) P. sp., P. circularis (249738)
NN4 - NN518.0 - 13.6North Pacific P. circularis (252770 252771 252772 252773 253088)
P. sicana LOSZ - P. glomerosa LOSZ16.38 - 15.1South Pacific P. glomerosa, P. curva (248457)
P. glomerosa LOSZ - O. suturalis LOZ16.27 - 14.24South Pacific P. glomerosa (248455 248456)
Langhian15.98 - 13.82North Pacific P. glomerosa (272810 272812) P. glomerosa, P. circularis (272811) P. transitoria (272807)
Langhian15.98 - 13.82Indian Ocean P. glomerosa (257703 257704 257705)
Langhian15.98 - 13.82USA (Maryland) P. glomerosa (48884)
Langhian15.98 - 13.82Italy P. glomerosa (73616)
Middle Miocene15.98 - 11.63North Pacific P. circularis (267766) P. circularis, P. glomerosa (245414 245415) P. circularis, P. glomerosa, P. transitoria (267770) P. curva (267177 267181 267183) P. glomerosa (267768 267769) P. glomerosa, P. curva (267182)
Middle Miocene15.98 - 11.63Chile (Coquimbo) P. transitoria (222362)
NN514.9 - 13.6North Pacific P. glomerosa, P. circularis (249733)
NN5 - NN614.9 - 11.9North Pacific P. circularis (252768)
Badenian13.82 - 12.8Czechia P. glomerosa (88803)
NN613.6 - 11.9North Pacific P. circularis (249729)
Late/Upper Miocene11.63 - 5.333North Pacific P. sp. (253813 254080)
Late/Upper Miocene11.63 - 5.333Indian Ocean P. glomerosa (255522)
NN810.9 - 10.6Indian Ocean P. glomerosa (249382)
C3An.1n6.272 - 6.023North Pacific P. transitoria (247444)
Pliocene5.333 - 2.58North Pacific P. sp. (247217)
Cochiti4.3 - 4.187North Pacific P. transitoria (247422)
C2Ar4.187 - 3.596North Pacific P. transitoria (247415)
C2An.1n3.032 - 2.61North Pacific P. transitoria (250200)