Related Research Articles
Conodonts are extinct agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements found in isolation and now called conodont elements. Knowledge about soft tissues remains limited. The animals are also called Conodontophora to avoid ambiguity.
Promissum is an extinct genus of conodonts, primitive chordates, that lived during the Upper Ordovician period.
Hindeodus is an extinct genus of conodonts in the family Anchignathodontidae. The generic name Hindeodus is a tribute to George Jennings Hinde, a British geologist and paleontologist from the 1800s and early 1900s. The suffix -odus typically describe's the animal's teeth, essentially making Hindeodus mean Hinde-teeth.
Archeognathus is a fossilized jaw apparatus of a large predatory conodont from the Ordovician period. Its large size has made classification difficult, and it has historically been compared to conodonts and gnathostomes since its remains were first discovered in Missouri. Complete articulated jaw apparatus of Archeognathus primus are common in the Winneshiek Shale lagerstätte of Iowa, allowing its identity as a conodont to be secured.
Prioniodontida, also known as the "complex conodonts", is a large clade of conodonts that includes two major evolutionary grades; the Prioniodinina and the Ozarkodinina. It includes many of the more famous conodonts, such as the giant ordovician Promissum (Prioniodinina) from the Soom Shale and the Carboniferous specimens from the Granton Shrimp bed (Ozarkodinina). They are euconodonts, in that their elements are composed of two layers; the crown and the basal body, and are assumed to be a clade.
Iapetognathus is a genus of cordylodan conodonts. It is one of the oldest denticulate euconodont genera known.
Cordylodontidae is a family of conodonts.
Spathognathodontidae is an extinct conodont family ranging from the Silurian to the Devonian.
Ozarkodinida is an extinct conodont order. It is part of the clade Prioniodontida, also known as the "complex conodonts".
Palmatolepidae is an extinct conodont family. It is part of the clade Prioniodontida, also known as the "complex conodonts".
Chirognathidae is an extinct family of conodonts.
Ozarkodina is an extinct genus of conodonts in the family Spathognathodontidae.
Balognathidae is an extinct conodont family.
Notiodella is an extinct conodont genus in the family Balognathidae. It has been described from a 17-element apparatus from the Soom Shale Lagerstätte in South Africa.
Idiognathodus is an extinct conodont genus in the family Idiognathodontidae.
Icriodus is an extinct conodont genus in the family Gnathodontidae.
Carnepigondolella is an extinct genus of conodonts of the Late Triassic of Italy or Canada.
Gapparodus is an extinct genus of conodonts in the family Furnishinidae. Gapparodus gapparites is a species of the Early Cambrian of Shuijingtuo Formation in China.
Utahconus is an extinct genus of conodonts.
Oncodella is an extinct genus of Late Triassic conodont. The genus was given the type species Oncodella idiodentica by Mosher (1968), on the basis of fossils from the Late Triassic of Austria. However, Mosher (1969) later revised the species name to Oncodella paucidentata, since identical fossils from the same area were previously given the name Hindeodella paucidentata by Mostler (1967).
References
- Structure and evolution of Ordovician conodont apparatuses. Christopher R Barnes, David J. Kennedy, Alexander D. McCracken and Glen A. Tarrant, Lethaia, October 2007, volume 12, issue 2, pages 125–151, doi : 10.1111/j.1502-3931.1979.tb00992.x
