†Eumarcia (Atamarcia) Marwick 1927 (venus clam)
Bivalvia - Cardiida - Veneridae
Alternative spelling: Atamarcia
Parent taxon: Eumarcia according to Marwick 1927
See also Beu et al. 1990
Sister taxa: Eumarcia (Eumarcia), Eumarcia (Opimaria), Eumarcia fumigata
Subtaxa: Atamarcia crassa Atamarcia curta Eumarcia (Atamarcia) robusta Eumarcia (Atamarcia) sulcifera
Type: Eumarcia (Atamarcia) sulcifera
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Miocene of New Zealand (3 collections)
• Oligocene of New Zealand (7)
• Eocene of Antarctica (2)
Total: 12 collections including 13 occurrences