Genus
Arca Linnaeus, 1758
Classification
References based on distribution
- Lavrentjeva, 1985 Porkuni Porkuni Stage
- Lavrentjeva, 1985 Moe
- Bassler, 1911b Kärdla quarry Vormsi Stage
- Spjeldnaes, 1984a Öjle Myr, Gotland Pirgu Stage
- Wiman, 1901 Porkuni Porkuni Stage
- Wiman, 1901 Öjle Myr, Gotland
- Kopajevich, 1975 Wenlock
- Kopajevich, 1975 Upper Ordovician
- Kopajevich, 1975 Matsuküla quarry Raikküla Stage
- Kopajevich, 1975 Llandovery
- Kiepura, 1962
- Bassler, 1911b Porkuni
- Bassler, 1911b Öjle Myr, Gotland
- Brood, 1985 Rönnklint, Gotland Llandovery
- Isakar, 1991 Porkuni quarry Porkuni Stage
- Märss et al., 2002 Thorsteinsson quarry, Cornwallis Island Sheinwoodian