the Roadian is an age or stage of the Permian. It is the earliest or lower of three subdivisions of the Guadalupian Epoch or Series. The Roadian lasted...

There are three stages in the guadalupian, they are the Roadian, Wordian, and Capitanian. The Roadian Stage was between 272.3 ± 0.5 – 268.8 ± 0.5 Mya. Olson's...

and colleagues in 1992 proposed a tripartite scheme, advocating that the Roadian-Capitanian was distinct from the rest of the Late Permian, and should be...

late Lower Permian (Kungurian) and possibly the early Middle Permian (Roadian) in what is now Texas and Oklahoma in the United States. The large number...

years ago (Ma). It was preceded by the Artinskian and followed by the Roadian. The Kungurian is named after the Russian city of Kungur in Perm Krai....

the last known caseids come from the strata of the middle Permian (Upper Roadian-Wordian) of France and European Russia, where they cohabited notably with...

doi:10.18814/epiiugs/1998/v21i1/003. Retrieved 7 December 2020. "GSSP for Roadian Stage". International Commission on Stratigraphy. Retrieved 13 December...

Kemerovo Region (Kaltan), Permian, Cisuralian/Guadalupian, Kungurian/Roadian (Cisuralian/Biarmian, Kungurian/Kazanian), −272.5–268.0 Ma Archicupes jacobsoni...

Ophiacodontidae died out around the Kungurian–Roadian boundary, while Caseidae and Therapsida diversified; later in the Roadian or slightly later Sphenacodontidae...

zone of Afganella schenki Olson’s Extinction, in the early Guadalupian (Roadian, Wordian), led to an extended period of low diversity when worldwide two-thirds...

or earliest Permian (Asselian) to the early Guadalupian epoch (latest Roadian stage) of North America, China, Germany, Russia and France. The bolosaurids...

± 0.21 * Guadalupian Capitanian 264.28 ± 0.16 * Wordian 266.9 ± 0.4 * Roadian 273.01 ± 0.14 * Cisuralian Kungurian 283.5 ± 0.6 Artinskian 290.1 ± 0.26...

Micraster echinoid fossil from England Productid brachiopod ventral valve; Roadian, Guadalupian (Middle Permian); Glass Mountains, Texas. Agatized coral from...

Dimetrodon angelensis, is from the latest Kungurian or, more likely, early Roadian San Angelo Formation. However, given the notorious incompleteness of the...

descendants, the mammals. The group became extinct by the Kungurian or the Roadian, replaced by anomodonts, theriodonts, and the diapsid reptiles. The lifestyle...

extinct genus of caseid synapsid that lived during the early Middle Permian (Roadian) in what is now Sardinia. It is represented by a single species, the type...

Cooper & Grant 1969 (Roadian, Guadalupian, Middle Permian); Glass Mountains, Texas. Productid brachiopod ventral valve interior; Roadian, Guadalupian (Middle...

The Permian–Triassic deposits of Nurra preserve the oldest (Permian: Roadian) fluvial burrows ascribed to ghost shrimps (Decapoda: Axiidea, Gebiidea)...

Roadian of Tajikistan and Thailand Prostacheoceras benedictinum Gemmellaro, 1887: Wordian of Italy Prostacheoceras burnense Tumanskaia, 1931: Roadian...

Cooper & Grant 1969 (Roadian, Guadalupian, Middle Permian); Glass Mountains, Texas. Hercosestria cribrosa Cooper & Grant 1969 (Roadian, Guadalupian, Middle...

Guadalup Lopin Early Triassic Asselian Sakmarian Artinskian Kungurian Roadian Wordian Capitanian Wuchiapingian Changhsingian       Subdivision of the...

period from the Artinskian stage of the Cisuralian (Early Permian) to the Roadian stage of the Guadalupian (Middle Permian). The closest living relatives...

between 266.9 and 264.28 million years ago (Ma). It was preceded by the Roadian and followed by the Capitanian. The Wordian Stage was introduced into scientific...

Guadalupian Lopingian Gzhelian Asselian Sakmarian Artinskian Kungurian Roadian Wordian Capitanian Wuchiapingian Changhsingian Zechstein Rotliegend    ...

which had been in a long-term decline for the 30 million years since the Roadian (middle Permian), suffered a selective extinction pulse 10 million years...

Guadalupian Lopingian Gzhelian Asselian Sakmarian Artinskian Kungurian Roadian Wordian Capitanian Wuchiapingian Changhsingian Zechstein Rotliegend    ...

members, from young to old: Appel Ranch - Wordian China Tank - Roadian Willis Ranch - Roadian The limestone formation contains marine gastropods, brachiopods...

is assumed that they must have evolved during the earlier part of the Roadian, or possibly even the Kungurian epoch, but no trace has been found. These...

basal hybodont (Chondrichthyes, Hybodontiformes) from the Middle Permian (Roadian) Kaibab Formation, of northern Arizona. New Mexico Museum of Natural History...

geologic formation in Oklahoma. It preserves fossils dating back to the Roadian stage of the Middle Permian. These include, among others, the dissorophoid...