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Ventrolaminidae

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Ventrolaminidae
Temporal range: BajocianBerriasian
Scientific classification
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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.

References

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