Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 1 : 無料・フリー素材/写真
Fossiliferous mudshale (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 1 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Brachiopods in fossiliferous mudshale in the Pennsylvanian of Ohio, USA.This is the Boggs Shale, a marine fossiliferous mudshale unit that caps the Boggs Limestone in the Pennsylvanian-aged Pottsville Group of eastern Ohio, USA. Fossils are moderately common in this unit at this locality (Blunt Run, Muskingum County) and include brachiopods (Anthracospirifer occiduus, Antiquatonia coloradoensis, Composita cf. Composita subtilita, Rugosochonetes delicatus), encrusting bryozoans, fenestrate bryozoans, carbonized wood, bivalves, and crinoid stems.In the above photo, the brachiopod at upper right (mostly preserved as an internal mold) is a spiriferid, Anthracospirifer occiduus. The smaller brachiopod at center-left appears to be a productid, possibly Antiquatonia.Stratigraphy: Boggs Shale (just above the Boggs Limestone), middle Pottsville Group, lower Atokan Stage, lower Middle PennsylvanianLocality: loose talus block along Blunt Run (= east-flowing tributary of the Muskingum River), Muskingum Township, north-central Muskingum County, eastern Ohio, USA (~40° 01' 44.88" North latitude, ~81° 59' 49.48" West longitude) |
| 撮影日 | 2015-09-13 11:09:40 |
| 撮影者 | James St. John |
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