page_title: Fusulinida
hierarchical_section_title: Fusulinida
caption_attribution_description: Fusulinid limestone (~3.9 cm across) from the Pennsylvanian of Kansas, USA. 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 large, benthic forams. They had elongated, rice-like skeletons (tests). 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 Pennsylvanian Locality: Elk County, southeastern Kansas, USA
context_page_description: The Fusulinida is an extinct order within the Foraminifera in which the tests are composed of secreted hyaline calcite. Like all forams, they were single-celled organisms. In advanced forms the test wall was differentiated into two or more layers. Loeblich and Tappan, 1988, gives a range from the Lower Silurian to the Upper Permian, with the fusulinid foraminifera going extinct with the Permian–Triassic extinction event. While the latter is true, a more supported projected timespan is from the Mid-Carboniferous period.
context_section_description: The Fusulinida is an extinct order within the Foraminifera in which the  tests are composed of secreted hyaline calcite. Like all forams, they were single-celled organisms. In advanced forms the test wall was differentiated into two or more layers.  Loeblich and Tappan, 1988, gives a range from the Lower Silurian to the Upper Permian, with the fusulinid foraminifera going extinct with the Permian–Triassic extinction event. While the latter is true, a more supported projected timespan is from the Mid-Carboniferous period.
caption: Fusulinid limestone, Upper Pennsylvanian; Elk County, Kansas. Field of view is 3.9 cm wide. Link at source to view of entire slab.
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