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Linked specimens: USNM-5355 USNM-5705 USNM-5690
Current identification:
Test free, small, trochospiral, spiral side flattened, umbilical side strongly convex and highest at the umbilical shoulder around the small deep umbilicus, periphery subangular, peripheral outline only slightly lobidate; chambers low and relatively broad on the spiral side, with 6 or more rarely 7 in the final whorl, the chambers sloping sharply outward to the periphery from the umbilical shoulder at the small umbilicus,giving the test a low conical appearance; sutures distinct, curved obliquely backwards on the spiral side, radial on the umbilical side ; wall calcareous, finely perforate, entire surface may be hispid, but with early spire most prominently spinose, final one or two chambers may be somewhat more smooth; aperture a very small interiomarginal, extraumbilical-umbilical arch.
Original Description
Size: Holotype 0.23 mm. in diameter.
Etymology:
The specific name is from the Greek thrix, trichos, hair, and trochus, wheel.
Loeblich, A. R. & Tappan, H. (1957b). Planktonic foraminifera of Paleocene and early Eocene Age from the Gulf and Atlantic coastal plains. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin. 215: 173-198. gs V OReferences:
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Globorotalia trichotrocha compiled by the pforams@mikrotax project team viewed: 6-3-2021
Short stable page link: https://mikrotax.org/pforams/index.php?id=131297 Go to Archive.is to create a permanent copy of this page - citation notes |