Fusulinid limestone (Iola Formation, Upper Pennsylvanian; Elk County, southeastern Kansas, USA) 1 : 無料・フリー素材/写真
Fusulinid limestone (Iola Formation, Upper Pennsylvanian; Elk County, southeastern Kansas, 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 | Fusulinid limestone from the Pennsylvanian of Kansas, USA. (13.7 centimeters across at its widest)This is one of the most amazing fossiliferous limestones I've ever seen. The surface shown here is a monospecific concentration of fusulinid foraminifera ("forams"). Fusulinids are an extinct group of unicellular, marine benthic organisms (Protista, Granuloreticulosa, Foraminifera, Fusulinina). They had large, elongated, rice-like, microgranular, calcareous skeletons (tests). Fusulinids were widespread in Late Paleozoic shallow epicontinental seas.The other (non-photogenic) side of this limestone is also covered with numerous fusulinids, plus a small section of crinoid steam, a Euphemites bellerophontid mollusc, and a Knightites bellerophonitd mollusc.Stratigraphy: Raytown Member, Iola Formation, Kansas City Group, Missourian Series, lower Upper PennsylvanianLocality: Elk County, southeastern Kansas, USA |
| 撮影日 | 2014-09-26 19:54:36 |
| 撮影者 | James St. John |
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