Earth Sciences
Collections

Dallarca staminea

UNB-2018-0448Fossils » Eukaryote » Animalia » Mollusca » Bivalvia

Description

Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Subclass: Autobranchia Order: Arcida Family: Arcidae Genus: Dallarca (Ward, 1992) Species: Dallarca staminea (Say, 1832) Six specimens; Four specimens of the right valves and two specimens of the left valves. Prominent longitudinal ribs. Faint growth lines near the ventral margin. Prominent posterior ridge. Large, rounded umbo. Rounded/square ventral margin and rounded/triangular dorsal margin. Adductor scars are visible in the interior portion of the valves. Taxodont dentition.

Specifications

Object nameDallarca staminea
IDUNB-2018-0448
Legal statusPermanent collection
CategoryFossil
Classification
Domain:
Eukaryote
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Bivalvia
CompositionCalcium carbonate
Age
Eon:
Phanerozoic
Era:
Cenozoic
Period:
Neogene
Epoch:
Miocene to Middle Miocene
Numeric age16 Mya
OriginCalvert Beach, Maryland, U.S.A.
Pieces6
PartialNo
Measurements
  • 2.5cm x 1.5cm x 0.7cm
  • 3.2cm x 3cm x 1.4cm
  • 2.9cm x 2.3cm x 0.8cm
  • 3.3cm x 2.2cm x 1cm
  • 4cm x 2.1cm x 1.5cm
  • 3.7cm x 3.2cm x 1.9cm

Map of Origin

Publications

  • L. W. Ward. 1992. Molluscan biostratigraphy of the Miocene Middle Atlantic Coastal Plain of North America. Virginia Museum of Natural History 2