CATALOG OF ORIGINAL DESCRIPTIONS: Beella chathamensis McCulloch 1977

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 -> B -> Beella -> Beella chathamensis
Other pages this level: B. chathamensis, B. discors, B. guadalupensis,

Beella chathamensis

Citation: Beella chathamensis McCulloch 1977
Rank: species
Type locality: In 400 fms. on Velero Station 487, 01°01'S, 89°30'W, off Chatham (San Cristóbal) Island, Galápagos.
Type level: Recent
Holotype Repository: Los Angeles, Univ Southern California, Allan Hancock Foundation
Holotype number: holotype (figs. 9, 13), AHF 2555; paratype (fig. 12), AHF 2558.

Current identification/main database link:

Original Description
Test free, calcareous, some what quadrate in contour, compressed, strongly trochospiral, lobulate, periphery rounded, wall semihyaline to opaque, punctate minutely spinous or coarsely hispid, about three whorls of subglobose in flated chambers gradually increasing in size fourto five chambers in last formed with chambers tending to be come elon gate subcyclindrical with terminal and tapering off to a point and frequently curving; spire medium in height; sutures depressed, curved, radiate; aperture umbilical extraumbilical equa to rial with imperforate hyaline lips.

Size: Holotype (figs. 9, 13) 0.664 x 0.456mm; paratype (fig. 12) 0.581 x 0.498mm.

Extra details from original publication
This taxon suggests Globigerina digitata Brady (Brady, 1884, pl. 80, figs. 6-10) which Barker (1960, pl. 80, figs. 6-10; pl. 82, figs. 6, 7) listed as transferred to genus Hastigerinella Cushman, 1927. Loeblich and Tappan (1964) have illustrated Brady’s taxon as the type species of the above genus. The differences of the present taxon and the type species of genus Beella are shown in texture, shape of chambers and the apertural formation including the lip.


Barker 1960 [sorry, not in our bibliography yet]

Brady, H.B., (1884). Report on the Foraminifera dredged by H.M.S. Challenger, during the years 1873-1876. Rep. Sci. Results H.M.S. Challenger 1873-6, 9 (Zoology): 1-814.

Loeblich, A.R., Jr. & Tappan, H., (1964). Sarcodina, Chiefly "Thecamoebians" and Foraminiferida. In: Moore, R.C. (Editor), Treatise on Invertebrate Paleontology, Protista 2, pt. C. University of Kansas Press, Lawrence, pp. 900 p.

McCulloch, I.A., (1977). Qualitative observations on Recent foraminiferal tests with emphasis on the eastern Pacific (3 vols). University of Southern California, Los Angeles.


Beella chathamensis compiled by the pforams@mikrotax project team viewed: 22-1-2018

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