CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia subconica Morrow 1934

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 subconica
Other pages this level: << < G. saginata, G. saheliana, G. salisburgensis, G. saphoae, G. scitula gigantea, G. scitula praescitula, G. scitula subscitula, G. scitula ventriosa, G. seigliei, G. sibaiyaensis, G. sinuososuturalis, G. spinulosa, G. strabocella, G. sturanii, G. subbotinae, G. subconica, G. suterae, G. tadjikistanensis, G. testarugosa, G. tetracamerata, G. thebaica, G. tortiva, G. tosaensis, G. traubi, G. tribulosa, G. trichotrocha, G. trinidadensis, G. troelseni, G. truncatulinoides excelsa, G. uncinata, G. uncinata carinata> >>

Globorotalia subconica

Citation: Globorotalia subconica Morrow 1934
Rank: Species
Type locality: from sec. 32, T. 11 S., R. 16 W.,Ellis County, Kansas
Type age (chronostrat): Cretaceous
Type specimens: Plate 30 figs 11, 18; No 75380.
Type repository: USNM

Linked specimens: USNM-75380

Current identification:


Original Description
Test planoconvex, subconical, dorsal side slightly convex or flat, the sides of the cone flare near the periphery giving them a gently concave profile, umbilical cavity at the apex, small but distinct periphery keeled or very sharply rounded; chambers indistinct, about six in last whorl; sutures on ventral side may be slightly depressed on dorsal side, curved; wall smooth finely perforate; aperture elongate, extending along the inner edge of the last chamber

Size: Height of holotype 0.36 mm., thickness 0.18 mm.

Extra details from original publication
This species seems to be intermediate between the larger species G. micheliniana (d'Orbigny) (4, p. 31, pl. 3, figs. 1-3) which has a relatively higher and straighter sided cone, and an undescribed species in which the cone is lower than G. subconica, with a very sharply keeled periphery. The Ripley for, Gyroidina alabmensis (Sandidge (pp 283-284) differs from our species in being less compressed and in having convex ventral sides viewed from the side. This species has been found only in the basal Niobara where it is relatively common.

References:

Morrow, A. L. (1934). Foraminifera and ostracoda from the Upper Cretaceous of Kansas. Journal of Paleontology. 8: 186-205. gs


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Globorotalia subconica compiled by the pforams@mikrotax project team viewed: 18-4-2021

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