Gilbertsocrinus Temporal range: [1] | |
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Fossil specimen of Gilbertsocrinus tuberosus from United States, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
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Genus: | Gilbertsocrinus Phillips 1836 |
Gilbertsocrinus are an extinct genus of Paleozoic stalked crinoids. [2]
These stationary upper-level epifaunal suspension feeders lived in the Devonian of the Czech Republic and United States, as well as in the Carboniferous of the United Kingdom and United States, from 416.0 to 345.0 Ma. [1]
Gilbertsocrinus are quite common crinoids with some unusual features. They have a flexible column, an unusual holdfast, tegmen appendages and minute arms. [3] [4]
Crinoids are marine animals that make up the class Crinoidea, one of the classes of the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. Those crinoids which, in their adult form, are attached to the sea bottom by a stalk are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, being members of the largest crinoid order, Comatulida.
The Jerusalem artichoke, also called sunroot, sunchoke, wild sunflower, topinambur, or earth apple, is a species of sunflower native to central North America. It is cultivated widely across the temperate zone for its tuber, which is used as a root vegetable.
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Blastoids are an extinct type of stemmed echinoderm, often referred to as sea buds. They first appear, along with many other echinoderm classes, in the Ordovician period, and reached their greatest diversity in the Mississippian subperiod of the Carboniferous period. However, blastoids may have originated in the Cambrian. Blastoids persisted until their extinction at the end of Permian, about 250 million years ago. Although never as diverse as their contemporary relatives, the crinoids, blastoids are common fossils, especially in many Mississippian-age rocks.
Calopogon, grass pink, is a genus of terrestrial orchids. The generic name is from Greek and means "beautiful beard", referring to the cluster of hairs adorning the labellum. The five species are native to the eastern United States, eastern Canada, Cuba and the Bahamas. The genus Calopogon is abbreviated Cpg in trade journals.
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Bumastus is an extinct genus of corynexochid trilobites which existed from the Early Ordovician period to the Late Silurian period. They were relatively large trilobites, reaching a length of 6 in (15 cm). They were distinctive for their highly globular, smooth-surfaced exoskeleton. They possessed well-developed, large compound eyes and were believed to have dwelled in shallow-water sediments in life.
Agaricocrinus americanus, the mushroom crinoid, is a species of extinct crinoid, known only from its fossils, which are found in the U.S. states of Indiana, Tennessee and Kentucky. They date back to the Lower Mississippian, about 345 million years ago.
Periechocrinus is an extinct genus of crinoids belonging to the order Monobathrida, family Periechecrinidae.
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Forbesiocrinus is an extinct genus of crinoids.
Taxocrinus is an extinct genus of crinoids.
Abrotocrinus is an extinct genus of crinoids.
Scytalocrinus is an extinct genus of crinoids.
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Delocrinus is a genus of extinct crinoids, belonging to the family Catacrinidae. Specimens have been found in Kansas Missouri Nebraska Nevada Oklahoma, Arizona, Iowa, Texas, Utah and Virginia.
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