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The Rhaetian is, in geochronology, the latest age of the Triassic period or in chronostratigraphy the uppermost stage of the Triassic system. According to the current ICS system, the Rhaetian ended 201.3 ± 0.2 million years ago. It is uncertain when it began, but a commonly cited approximation of 208.5 Ma originated in the 2012 ICS timescale. It was preceded by the Norian and succeeded by the Hettangian.
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.
Cyclotosaurus is an extinct genus of temnospondyl within the family Mastodonsauridae. It was of great size for an amphibian, reaching 3–4.3 m (9.8–14.1 ft) in length with an elongated 70 cm (28 in) skull.
Mystriosuchini is an extinct tribe of derived phytosaurs in the clade Leptosuchomorpha. As with all other phytosaurs, mystriosuchins lived during Late Triassic. The name is derived from the genus Mystriosuchus.
Taphrognathus is an extinct genus of conodonts from the Dinantian.
The Norian is a division of the Triassic geological period. It has the rank of an age (geochronology) or stage (chronostratigraphy). The Norian lasted from ~227 to 208.5 million years ago. It was preceded by the Carnian and succeeded by the Rhaetian.
Edward B. Branson was an American geologist and paleontologist. He worked at the University of Missouri.
Parapachycladina is an extinct genus of conodonts in the family Ellisoniidae, from the Early Triassic of the Beisi Formation in Guangxi Province, China.
Clarkina is an extinct genus of conodonts. It is considered to be an offshore, outer shelf or basinal, deep-water taxon.
Neogondolellla is an extinct genus of conodonts. Neogondolela regalis was re-evaluated in 2018 by Martyn Lee Golding.
Chiosella is an extinct conodont genus.
Metapolygnathus is an extinct genus of platform conodonts.
Carnepigondolella is an extinct genus of conodonts of the Late Triassic of Italy or Canada.
Kraussodontus is an extinct genus of gondolellid ozarkodinid conodonts of the Late Triassic in the Pardonet Formation of Canada.
Mazzaella is an extinct genus of ozarkodinid conodonts in the family Gondolellidae from the Late Triassic of Europe and Turkey.
Conodonts are an extinct class of animals whose feeding apparatuses called teeth or elements are common microfossils found in strata dating from the Stage 10 of the Furongian, the fourth and final series of the Cambrian, to the Rhaetian stage of the Late Triassic. These elements can be used alternatively to or in correlation with other types of fossils in the subfield of the stratigraphy named biostratigraphy.
Neospathodus is an extinct genus of conodonts.
Misikella is an extinct genus of conodonts. It is a genus with a tetramembrate conodont apparatus.
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The Alaunian, also known as "Middle Norian", is a sub-age in the Upper Triassic. It is followed by the Upper Norian, also known as Sevatian.
References
- ↑ Triassic conodonts from western North America and Europe and their correlation. LC Mosher, Journal of Paleontology, Volume 42, No. 4 (Jul., 1968), pages 895-946 (Stable URL, retrieved 13 June 2016)
- 1 2 Application of numerical cladistic analyses to the Carnian–Norian conodonts: a new approach for phylogenetic interpretations. Michele Mazza; Andrea Cau; Manuel Rigo, Journal of Systematic Palaeontology, 2012, 10 (3), pages 401–422, doi:10.1080/14772019.2011.573584
