Catalog - Lilliputianella longorii Catalog - Lilliputianella longorii

CATALOG OF ORIGINAL DESCRIPTIONS: Lilliputianella longorii Banner and Desai 1988

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Lilliputianella longorii

Citation: Lilliputianella longorii Banner and Desai 1988
taxonomic rank: Species
Type specimens: PI. 4, figs. 11-12.; P52116 & P52117
Type age (chronostrat): Late Aptian, upper Leupoldina cabri zone (holotype, Sample 8103), and lower/middle Leupoldina cabri zone (paratypes, Sample 8109).
Type locality: Speeton Cliff, Filey Bay, North Yorkshire, England
Type repository: London, UK; NHM

Linked specimens: London, UK; NHM (PM P 52116) London, UK; NHM (PM PF 52116) London, UK; NHM (52117)

Current identification/main database link: Hedbergella bizonae (Chevalier, 1961)

Original Description

The test is a low trochospire with five to six chambers in the last whorl. The last two or three chambers increase rapidly in height to become Wz to twice as high as broad in umbilical view, and ovoid in form, being bluntly rounded or pointed conical at their distal ends. The greatest breadth of each chamber is at the distal end of each intercameral suture. On the umbilical side, the intercameral sutures are straight but are slightly oblique to the test radius, especially between the earlier chambers. The umbilicus is deep but narrow, in breadth being about 10% to 12% of the maximum test diameter. The umbilical-extraumbilical aperture is a low slit, furnished with a narrow porticus; relict apertures and portici are visible within the umbilicus for the latter half of the final whorl. The surface of the test is smooth except occasionally for irregular, scattered, rounded, blunt pustules around the umbilical margin; the surface is penetrated by scattered perforations of 0.004 to 0.008 mm (mostly about 0.006 mm) diameter, distributed irregularly over the test surface.

In honour of Jose Francisco Longoria, Mexican Institute of Petroleum Technology and Exploration, Mexico, in recognition of his researches into Aptian-Albian planktonic foraminifera.

Extra details from original publication
Remarks. Lilliputianella longorii differs from L. semielongata (Hedbergella semielongata Longoria, 1974, p. 66, pl. 21, figs. 1-5; Globigerinelloides gottisi zone, Early Aptian, to lower Leupoldina cabri zone, earliest Late Aptian, northern Mexico) in its much less elongate, less clavate chambers and smaller umbilicus. L. longorii differs from L. labocaensis (Hedbergella labocaensis Longoria, 1974, p. 60, figs. 7-9, 22-24, from the “Hedbergella” gorbachikae zone to the H. trocoidae zone, Latest Aptian, northern Mexico) in its smaller umbilicus.

L. longorii does not have the rapid and extreme radial elongation of the later chambers of the last whorl which is so characteristic of Lilliputianella roblesae (Globigerina roblesae Obregon, 1959, p. 149, pi. 4, cabri zone, Mexico).


Banner, F. T. & Desai, D. (1988). A review and revision of the Jurassic-Early Cretaceous Globigerinina,with especial reference to the Aptian assemblages of Speeton (North Yorkshire, England). Journal of Micropalaeontology. 7: 143-185. gs

Longoria, J. F. (1974). Stratigraphic, morphologic and taxonomic studies of Aptian planktonic foraminifera. Revista Española de Micropaleontología. Numero Extraordinario: 5-107. gs


Lilliputianella longorii compiled by the pforams@mikrotax project team viewed: 10-12-2023

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Comments (2)

Le Coze

Lilliputianella longorii is the type species of Lilliputianella. From other sources (Moullade et al. (2002) fide Lilliputianella is said to be a junior synonym of Praehedbergella?

Jeremy Young(UK)

Thanks that's another question for Brian though - I don't know if he is deliberately not following Moullade et al. or just hasn't revised this yet.