Scientific Classification
| Kingdom: Animalia |
| Phylum: Brachiopoda |
| Class: Strophomenata |
| Order: Strophomenida |
| Family: Strophodontidae |
| Genus: Pholidostrophia |
| Species: Pholidostrophia nacrea (Hall, 1857) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
References
Hall, J., 1867 (as Strophodonta nacrea): p. 104 pl. 18.
Linsley, D., 1994: p. 178, figs 21-28.
Wilson, K., 2014: pp. 100, 101.
Remarks
Originally described as Strophodonta nacrea by Hall in 1857. Recombined as Pholidostrophia nacrea by Hall and Clarke in 1892.
From Wilson (2014, p. 100): “Small shell; pedicle valve convex, with smooth nacreous surface. This is our only brachiopod generally exhibiting a mother-of-pearl appearance. To 15 mm.”
From Carleton Brett and Gordon Baird: “This is an unusual and distinctive taxon which commonly shows a silvery pink shell, actually a form of calcite that mimics nacre. Nearly identical forms P. owensis and P. pennsylvanica are non-nacreous but this may represent a taphonomic difference and these are probably synonymous with P. nacrea. An Eastern Americas Realm taxon it is typical of high diversity calcareous facies from the Eifelian Onondaga-Columbus formations to the Ludlowville Formation. Pholidostrophia is particularly typical of argillaceous limestones of distinctive Eldredgeops- Stereolasma biofacies in the Hamilton Group (Mottville, Ashantee, Wanakah). However, it is extremely rare or absent from these or any other facies the Moscow of Tully Formations except in a single bed in the newly recognized Duel Road Member a silty interval between the Kashong and Windom members. A related or identical form Pholidostrophia pennsylvanica occurs in the Moscow equivalent upper Mahantango Formation.
Online Resources
[Paleobiology Database](Genus-level page)(https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=txn:27778)
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