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Favosites is an extinct genus of tabulate coral characterized by polygonal closely packed corallites (giving it the common name "honeycomb coral"). [1] The walls between corallites are pierced by pores known as mural pores which allowed transfer of nutrients between polyps.
Gymnophyllum wardi, commonly known as button coral, is an extinct coral from the Pennsylvanian part of the Carboniferous period. [1] The fossils are found in relatively few places worldwide; most specimens are known from the upper part of the Wewoka Formation in and around Lake Okmulgee in Okmulgee State Park or the adjoining Dripping Springs State Park in Okmulgee County, Oklahoma in the ...
A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized rugose coral, Hexagonaria percarinata. [1] Such stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in the northwestern (and some in the northeastern) portion of Michigan's lower peninsula.
Syringopora is an extinct genus of phaceloid tabulate coral. [1] It has been found in rocks ranging in age from the Ordovician to the Permian, although it was most widespread during the Silurian, Devonian, and Carboniferous periods.
Fossils of this genus form Petoskey stones, the state stone of Michigan. [1] They can be seen and found in most Midwestern U.S. states. Hexagonaria is a common constituent of the coral reefs exposed in Devonian Fossil Gorge below the Coralville Lake spillway [ 2 ] and in many exposures of the Coralville Formation in the vicinity of Coralville ...
Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals ( Scleractinia ), rugose corals were invariably benthic , living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea , especially in the Silurian period.
It was a hermatypic coral, which require "warm, clear, shallow water" and live in symbiotic relationships with algae. [2] It is also likely that zooxanthellae (a kind of protozoa) lived on the coral. [3] It has been theorized that Isastrea could endure lower temperatures than most other hermatypic corals because it occurs farther north than ...
Lithostrotion is a genus of rugose coral which is commonly found as a fossil within Carboniferous Limestone. Lithostrotion is a member of the family Lithostrotionidae . The genus Lithostrotion , a common and readily recognised group of fossils, became extinct by the end of the Palaeozoic era.