Catalog - Dicarinella longoriai Catalog - Dicarinella longoriai

CATALOG OF ORIGINAL DESCRIPTIONS: Dicarinella longoriai Peryt 1980

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 -> D -> Dicarinella -> Dicarinella longoriai
Other pages this level: D. elata, D. jekeliana, D. longoriai, D. radwanskae, D. sudetica, D. takayanagii

Dicarinella longoriai

Citation: Dicarinella longoriai Peryt 1980
Taxonomic rank: species
Described on page(s) : 68-9
Type specimens: pl13 f1-3; FXXXIII/114
Type sample (& lithostrat): Hard white "opoka" [siliceous limestone]
Type age (chronostrat): Early Turonian
Type locality: Quarry 500 meters north of Karsy and 900 meters west of Ozarow-Tarlow road,5 km west of the Vistula River; also found at Piotrowice and Opoczka , both in the Vistula River valley of central Poland
Type repository: Warsaw - Institute of Paleobiology of the Polish Academy of Sciences

Current identification/main database link: Dicarinella longoriai Peryt 1980


Original Description

Diagnosis: Test low trochospiral, slightly convex on spiral side, slightly concave on umbilical side; periphery lobate; chambers petaloid on spiral side, sectorial on umbilical side; final whorl consisting of 4'/.-5 whorls; spiral sutures depressed; umbilical sutures radial, depressed

Description: Test trochospiral, slightly convex spiral side. flat or even slightly concave umbilical side. consisting of 2 whorls: periphery strongly lobate, truncated by distinct, closely spaced double keel; chambers petaloid, slightly inflated on spiral side; trapezoidal, flattened to weakly inflated on umbilical side; final whorl consisting of 4 1/ 2 chambers increasing sharply as added; spiral sutures curved, depressed in peripheral part, raised by keel coinciding with sutures in internal part; umbilical sutures radial, depressed; wall finely papillate; umbilicus narrow, rather deep; primary aperture extra umbilical-umbilical; portici with infralaminal accessory apertures.

Size:
L 0.35-0.37 mm; W 0.28-0.29, T 0.15-0.16mm (two specimens)

Etymology:
dedicated to Dr. José F. LONGORIA, a Mexican micropaleontologist.

Extra details from original publication
Remarks. - Dicarinella longoriai sp. n. differs from Dicarinella imbricata (MORNOD) in having less chambers in the final whorl, in being lower trochospiral, in not possessing the imbricated arrangement of chambers, and in having successive chambers increasing sharply in size. It differs from Dicarinella biconvexa biconvexa (SAMUEL and SALAJ) and Dicarinella biconvexa gigantea (SAMUEL and SALAJ) in being smaller, in having fewer chambers in the final whorl, chambers of different shape, a more incised peripheral margin and a convexo-concave test.

Occurrence. - Central Poland (Karsy, Piotrowice, Opoczka): Lower Turonian.

References:

Peryt, D. (1980). Planktic foraminifera zonation of the Upper Cretaceous in the middle Vistula River valley, Poland. Palaeontologia Polonica. 41: 1-123. gs


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Dicarinella longoriai compiled by the pforams@mikrotax project team viewed: 20-1-2026

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