Ventrolaminidae

The Ventrolaminidae are a family of benthic Foraminifera included in the Involutinida, now part of the subclass Spirillinana, class Spirillinata.[1]

Ventrolaminidae
Temporal range: Bajocian – Berriasian
Scientific classification
Domain:
Eukaryota
(unranked):
SAR
(unranked):
Rhizaria
Phylum:
Retaria
Subphylum:
Foraminifera
Class:
Spirillinata
Order:
Involutinida
Family:
Ventrolaminidae

Weynschenk, 1950

Tests of the Ventrolaminidae are lenticular, planispiral, or a low trochospiral with multiple chambers in a rapidly enlarging whorl. The wall is calcareous in two layers. The inner one is microgranular, the outer hyaline glassy).[2]

Two genera are included, Archaeosepta and Protopeneroplis. Loeblich and Tappan included Protopeneroplis (or Ventrolamina, in the Involutinidae in the Treatise Part C, 1964. Archaeosepta was added hence, in 1970.

References
  1. Spirillinata, Foraminifera
  2. Ventrolaminidae Loeblich & Tappan 1988, GSI e-book.
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