Ventrolaminidae
Family of single-celled organisms
Ventrolaminidae Temporal range: Bajocian – Berriasian | |
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Scientific classification | |
Domain: | Eukaryota |
(unranked): | SAR |
(unranked): | Rhizaria |
Phylum: | Retaria |
Subphylum: | Foraminifera |
Class: | Spirillinata |
Order: | Involutinida |
Family: | Ventrolaminidae Weynschenk, 1950 |
The Ventrolaminidae are a family of benthic Foraminifera included in the Involutinida, now part of the subclass Spirillinana, class Spirillinata.[1]
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.