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Conodonts are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which are usually found in isolation and are now called conodont elements. Knowledge about soft tissues remains limited. They existed in the world's oceans for over 300 million years, from the Cambrian to the beginning of the Jurassic. Conodont elements are widely used as index fossils, fossils used to define and identify geological periods. 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.
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.
Maurits Lindström was a Swedish geologist and paleontologist. Lindströms initial work was divided among two topics conodont paleontology and the structural geology of the Scandinavian Caledonides in Lappland.
Cordylodontidae is a family of conodonts.
Proconodontida is an order of conodonts.
Ozarkodinida is an extinct conodont order. It is part of the clade Prioniodontida, also known as the "complex conodonts".
Curtognathus is an extinct genus of conodonts from the Ordovician in the family Distacodontidae.
Paracordylodus is an extinct genus of conodonts in the clade Prioniodontida, also known as the "complex conodonts". The species P. gracilis has been recovered from the chert of the Narooma Terrane, a geological structural region on the south coast of New South Wales, Australia.
Gnathodus is an extinct conodont genus in the family Idiognathodontidae.
Icriodus is an extinct conodont genus in the family Gnathodontidae.
Proconodontidae is an extinct family of conodonts in the order Proconodontida.
Proconodontus is an extinct genus of conodonts in the family Proconodontidae. The specimens are found in Cambrian formations.
Neogondolellla is an extinct genus of conodonts. Neogondolela regalis was re-evaluated in 2018 by Martyn Lee Golding.
Gondolella is an extinct genus of conodonts in the family Gondolellidae.
Epigondolella is an extinct genus of conodonts in the family Gondolellidae.
Mazzaella is an extinct genus of Late Triassic ozarkodinid conodonts in the family Gondolellidae. They are found in mid-Julian sediments of the Tethys Ocean, including strata in Europe and Turkey.
Mazzaella may refer to:
Histiodella is an extinct genus of conodonts.
Panderodus Is an extinct genus of jawless fish belonging to the order Conodonta. This genus had a long temporal range, surviving from the middle Ordovician to late Devonian. In 2021, extremely rare body fossils of Panderodus from the Waukesha Biota were described, and it revealed that Panderodus had a more thick body compared to the more slender bodies of more advanced conodonts. It also revealed that this conodont was a macrophagous predator, meaning it went after large prey.
References
- ↑ A suprageneric taxonomy of the conodonts. M Lindström, Lethaia, Volume 3, Issue 4, pages 427–445, October 1970, doi:10.1111/j.1502-3931.1970.tb00834.x
