Scientific Classification
| Kingdom: Animalia |
| Phylum: Brachiopoda |
| Class: Strophomenata |
| Order: Strophomenida |
| Family: Chonetidae |
| Genus: Devonochonetes |
| Species: Devonochonetes coronatus (Conrad, 1842) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
References
Hall, J., 1867 (as Chonetes coronata): p. 131, pl. 21.
Wilson, K., 2014: pp. 102, 103.
Linsley, D., 1994: p. 180, figs. 1-15.
Remarks
Originally described as Chonetes coronata by Hall in 1857. Recombined as Devonochonetes coronatus by Muir-Wood in 1962.
From Wilson (2014, p. 103): “Medium-sized shell, with moderately convex pedicle valve with closely spaced surface striae. Each side of hinge line with 5-6 cardinal spines. To 20-25 mm.”
From Carl Brett: The large chonetid, Devonochonetes coronatus appears abruptly near the base of the Givetian in the Dave Ellliot and Hallihan Hill Beds of the Mount Marion Formation in the Hudson Valley of New York (Bartholomew and Schram, 2013). It commonly occurs with the strophomenid mimic Tropidoleptus and both brachiopods appear to have invaded eastern Laurentia during the Kacak Event, perhaps derived from the Old World Realm Rhenish Bohemian province.
Devonochonetes coronatus and Tropidoleptus are exceptionally widespread in the lower Givetian calcisiltites and fine grained grainstones of sequence Giv-1: lower Skaneateles Formation, mid Mottville mudstone (NY), lower Silica Shale blue limestone (OH), in Swanville Member (IN). This epibole seemingly records abupt expansion of both brachiopods into the mid-continent region. These brachiopods are otherwise rare or absent in the interior plaforms but in the Appalachian Basin they are often very abundant in eastern siltstone-sandstone facies; however, both are very common in the lower Moscow Kashong Member where they may occur with moderate diversity assemblages of brachiopods, and bivalves of the Tropidoleptus-Nucleospira association and related biofacies, where D. coronatus and T. carinatus appear to partly take the place of strophomenids as quasi-infaunal, free-resting suspension feeders (Brett et al. 2007, Palaios).
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