CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia monmouthensis Olsson 1960

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: pf_cat -> G -> Globorotalia -> Globorotalia monmouthensis
Other pages this level: << < G. menardii multicamerata, G. menardii neoflexuosa, G. menardii panda, G. mineacea, G. minuta, G. minutissima, G. miocenica mediterranea, G. miotumida explicationis, G. miozea, G. miozea acumarginata, G. miozea conoidea, G. miozea rifensis, G. miozea sphericomiozea, G. miroensis, G. mohleri, G. monmouthensis, G. multiloculata, G. munda, G. nagappai, G. nana pseudocontinuosa, G. nartanensis, G. naussi, G. neominutissima, G. nicobarica, G. nicolae, G. nicoli, G. obesa, G. occlusa, G. opima continuosa, G. opima nana, G. opima opima, > >>

Globorotalia monmouthensis

Citation: Globorotalia monmouthensis Olsson 1960
Rank: Species
Type locality: New Jersey
Type age: upper Maastrichtian
Type sample and level: Redbank Formation, Sandy Hook member, locality NJK-10
Holotype Repository: Washington; USNM
Type & figured specimens: 488562 (Neotype); Holotype (USNM 626470)

Linked specimens: USNM-626471

Current identification/main database link: Muricohedbergella monmouthensis (Olsson 1960)


Original Description
Test.--very low trochospiral, nearly planispiral in appearance. Equatorial periphery strongly lobate. Axial periphery rounded.
Wall.--calcareous, finely perforate, covered with short minute spines.
Chambers.--inflated, globular; about 15 arranged in 2 1/2 whorls. The 5, occasionally 6, chambers of the final whorl increase rather rapidly in size; the last two make up over 1/2 of the test.
Sutures.--spiral side: oblique in early stages to straight in adult stages, depressed, Umbilical side: radial, depressed.
Umbilicus.--narrow, deep.
Aperture.--a low arch with a distinct lip; interiomarginal, extraumbilical-umbilical.
Coiling.--random. 

Size: Diameter 0.20 to 0.25 mm.

Extra details from original publication
Remarks.-This species closely resembles Globorotalia elongata Glaessner. It is distinguished from this species by the more rounded axial periphery, the convex spiral side with radial sutures, the deep narrow umbilicus, and the distinct, rather wide apertural lip. 
Occurrence.-The species is present in the Redbank at Atlantic Highlands and New Egypt and in the Redbank in the Clementon, Whitesville, and Glendola wells.

References:

Olsson, R. K. (1960). Foraminifera of late Cretaceous and earliest Tertiary age in the New Jersey Coastal Plain. Journal of Paleontology. 34(1): 1-58. gs

Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gs


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Globorotalia monmouthensis compiled by the pforams@mikrotax project team viewed: 24-1-2020

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Comments (1)

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Le Coze

G. monmouthensis is accepted as Hedbergella monmouthensis (Olsson 1960) and Muricohedbergella monmouthensis (Olsson 1960) in Mikrotax..

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Jeremy Young (UK)

Well spotted! This is an interesting case since it is one of the very few planktonic foraminifera species which occurs in both the Cretaceous and the Cenozoic, and so in both modules of the main database. he Mesozoic taxonomy reflects more recent research than the Palaeocene one which is based on Olsson et al. 1999. We probably should use Muricohedbergella monmouthensis in both places but this does require some expert input.

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