| Ulrichicrinus Temporal range: | |
|---|---|
 | |
| Fossil of Ulrichicrinus from Carboniferous of United States | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Subphylum: | |
| Class: | |
| Subclass: | |
| Genus: | Ulrichicrinus Springer, 1926 [1] |
| Ulrichicrinus Temporal range: | |
|---|---|
| | |
| Fossil of Ulrichicrinus from Carboniferous of United States | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Subphylum: | |
| Class: | |
| Subclass: | |
| Genus: | Ulrichicrinus Springer, 1926 [1] |
This genus is known in the fossil records of the Carboniferous period of United States (age range: from 345.3 to 342.8 million years ago). [2]
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.
Charles Wachsmuth was a German-American paleontologist and businessman. After emigrating to the United States, he became a renowned expert on the Paleozoic fossil animals known as crinoids. He and his collaborator, Frank Springer, published numerous articles on the subject and built an exceptional collection of crinoid fossils. The culmination of his work was the two-volume "Monograph of the North American Crinoidea Camerata", coauthored with Springer and published posthumously in 1897.
Sagenocrinites is an extinct genus of crinoid from the Silurian period. During the Silurian period, a sea-covered Britain that was shallower in the south and deeper in the north lay south of the equator with a tropical to sub-tropical climate. Therefore, in the United Kingdom, amongst Silurian fossils, such as brachiopods, trilobites and graptolites, coral-like organisms like sagenocrinites can be found.
Actinocrinites is an extinct genus of crinoids.
Marsupites is an extinct genus of crinoids from the Santonian stage of the Late Cretaceous.
Qianichthyosaurus is an extinct genus of ichthyosaur from the Ladinian and Carnian stages of the Late Triassic epoch. Its fossils have been found in southeastern China, in Carnian rocks of the Falang Formation near Huangtutang, Guizhou. The type species is Qianichthyosaurus zhoui, named by Chun Li in 1999. A second species, Qianichthyosaurus xingyiensis, was named from older (Ladinian) deposits in the Falang Formation in 2013 by Pengfei Yang and colleagues. Complete Qianichthyosaurus fossils are common in the Falang Formation, with both juveniles and pregnant specimens being known; its larger contemporaries, Guizhouichthyosaurus and Guanlingsaurus, are rarer.
Paleontology in New Hampshire refers to paleontological research occurring within or conducted by people from the U.S. state of New Hampshire. Fossils are very rare in New Hampshire because so much of the state's geology is highly metamorphic. The state's complicated geologic history has made dating its rocks and the fossils they contain "a difficult task." The state's Devonian rocks are especially metamorphosed, yet its Mississippian rocks formed too recently to have been subject to the same metamorphism. Nevertheless, despite the geologic complications some fossils have been discovered in the state.
Paleontology in Missouri refers to paleontological research occurring within or conducted by people from the U.S. state of Missouri. The geologic column of Missouri spans all of geologic history from the Precambrian to present with the exception of the Permian, Triassic, and Jurassic. Brachiopods are probably the most common fossils in Missouri.
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.
Bourgueticrinida is an order of crinoids that typically live deep in the ocean. Members of this order are attached to the seabed by a slender stalk and are known as sea lilies. While other groups of crinoids flourished during the Permian, bourgueticrinids along with other extant orders did not appear until the Triassic, following a mass extinction event in which nearly all crinoids died out.
Petalocrinidae is an extinct family of cladid crinoids from the Early Ordovician to Lower Devonian. Fossils of petalocrinoids have been found in China, Europe and the United States.
Platycrinites are an extinct genus of Paleozoic stalked crinoids belonging to the family Platycrinitidae.
Eretmocrinus is an extinct genus of crinoids.
Forbesiocrinus is an extinct genus of crinoids.
Cydrocrinus is an extinct genus of crinoids.
Onychocrinus 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.
 | This prehistoric crinoid-related article is a stub. You can help Wikipedia by expanding it. |