Rhynchonellata - Orthida - Orthidae
Alternative combination: Orthis caliactis
Belongs to Orthis according to V. Jaanusson and M. G. Bassett 1993
See also Tjernvik and Johansson 1980
Sister taxa: Orthis (Finkelnburgia), Orthis (Orusia), Orthis acuminata, Orthis australis, Orthis berthoisi, Orthis biforata, Orthis biloba, Orthis bilobata, Orthis christianae, Orthis cypha, Orthis davidsoni, Orthis expansa, Orthis gwalia, Orthis intercostata, Orthis kreklingensis, Orthis laticostata, Orthis perveta, Orthis piger, Orthis reversa, Orthis ribeiroi, Orthis spinigera, Orthis subalata, Orthis subvulvaria, Orthis testudinaria, Orthis tulliensis
Ecology: stationary epifaunal suspension feeder
Distribution:
• Hunderum of the Russian Federation (1 collection), Sweden (3)
• Valaste of Estonia (4)
• Arenig of the United Kingdom (3)
• Ordovician of Estonia (5), the Russian Federation (25), Sweden (4)
Total: 45 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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