CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia marginaculeata Loeblich&Tappan 1946
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Citation: Globorotalia marginaculeata Loeblich&Tappan 1946Taxonomic rank: speciesType specimens: Holotype (Cushman Coll. no. 45665) and paratype of figure 21 (Cushman Coll. no. 45664) and paratypes (Loeblich Coll. no. 1088) from the Paw Paw formation at locality HTL 55, sample 283. Paratype of figure 20 (Cushman Coll. no. 45663) from the Grayson formation at locality HTL 103, sample 419. The hypotype (Cushman Coll. no. 45666) of Globorotalia delrioensis Plummer, of text figure 4B, is also from the latterFIG. 4-A, Globorotalia marginaculeata Loeblich sample, and figured for comparisonType repository: Washington; USNM
Original Description Test free, trochoid, dorsal side convex, ventral side somewhat flattened, umbilicate, periphery lobate and keeled; chambers numerous, inflated, all visible dorsally, only the six or seven of the last whorl visible on the ventral side; sutures distinct and depressed, nearly straight, slightly thickened dorsally; wall calcareous, finely perforate, ornamented by the spinose keel and numerous fine spines around the outer portion of the test; aperture comparatively large, an arch at the base of the last chamber just ventral to the periphery. Size: Greatest diameter of holotype 0.403 mm., least diameter 0.295 mm., greatest thickness 0.194 mm. Other specimens range in greatest diameter from 0.202 mm. to 0.425 mm.
References:
Loeblich, A. R. & Tappan, H. (1946). New Washita Foraminifera. Journal of Paleontology. 20: 238-258. gs
Globorotalia marginaculeata compiled by the pforams@mikrotax project teamviewed: 11-6-2026
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holotype illus-645.jpg
USNM cc 45663-645.jpg
holotype illus-645.jpg
USNM cc 45663-645.jpg
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