Strophomenata - Billingsellida - Polytoechiidae
Full reference: J. L. Benedetto, N. Cech, and C. Esbry. 2003. New Late Tremadoc-Early Arenig silicified brachiopods from the lower part of the San Juan Formation, Argentine Precordillera. Ameghiniana 40(4):513-530
Parent taxon: Tritoechia according to J. L. Benedetto et al. 2003
Sister taxa: Tritoechia (Tritoechia), Tritoechia alta, Tritoechia billingsi, Tritoechia careyi, Tritoechia crassa, Tritoechia delicatula, Tritoechia florentinensis, Tritoechia karmbergensis, Tritoechia kendyktasica, Tritoechia lewisi, Tritoechia mollesensis, Tritoechia quebecensis, Tritoechia sinuata, Tritoechia tokmakensis, Tritoechia typica
Subtaxa: Tritoechia (Parvitritoechia) preandina
Type: Tritoechia (Parvitritoechia) preandina
Ecology: stationary epifaunal suspension feeder
Distribution:
• Ordovician of Argentina (3 collections)
Total: 3 collections each including a single occurrence