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Devonochonetes coronatus Brachiopod from the Silica Shale
Source info:
| Author: | Dave |
|---|---|
| Date: | 2014-09-12 09:01:00 |
| Blog: | Views of the Mahantango  |
| URL: | http://viewsofthemahantango.blogspot.com/2014/09/devonochonetes-coronatus-brachiopod.html |
Summary:
Devonochonetes coronatus is a species that I know well from Givetian aged deposits in Pennsylvania and New York. Below is a specimen from the Silica Shale (Devonian, Givetian stage) near Sylvania, OH. It follows the form that I have used in the past to ID similar shells: Large size, rectangular shape, 1 valve covex while the other is concave. The specimen below has partially been replaced with Pyrite (darker areas) which is why it has a mottled appearance.Pedicle valveAnteriorBrachial valvePosteriorProfileCompare this to specimens I've found in the Centerfield mbr. of the Ludlowville Formation of New York and the Mahantango Formation of Pennsylvania.Content analysis:
Stratigraphic context:
| Recognized stratigraphic terms [n]: | Devonian [1] Givetian [2] Silica Shale [2] |
|---|---|
| Agenames chronostratigraphy [rating]: | Devonian [0.76] Paleozoic [0.76] Phanerozoic [0.76] Givetian [0.33] Middle Devonian [0.67] |
Geographic context:
| Location | Country | Latitude | Longitude |
|---|---|---|---|
| Pennsylvania | US | 40.9947 | -77.6045 |
| Centerfield | US | 42.886 | -77.4141 |
| Ludlowville | US | 42.5539 | -76.5418 |
| New York | US | 40.7146 | -74.0071 |
| Sylvania | US | 41.803 | -76.8606 |
| O.H. | TH | 7.00342 | 100.471 |
Keywords:
Brachiopod, Centerfield mbr., concave, darker areas, Givetian aged deposits, Givetian stage, ID similar shells, Large size, Ludlowville Formation, Mahantango Formation, New York, past, Pennsylvania, rectangular shape, Shale Devonochonetes coronatus, Silica Shale, species, specimen, specimens, Sylvania, valve covex
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