| Peronedon Temporal range: Early Permian | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Clade: | Tetrapodomorpha |
| Order: | † Nectridea |
| Family: | † Diplocaulidae |
| Genus: | † Peronedon Olson, 1970 |
| Type species | |
| †Peronedon primus Olson, 1970 | |
Peronedon is an extinct genus of nectrideans in the family Diplocaulidae. It is distinguished from other diplocaulids by the absence of a postorbital. [1]
Paris Saint-Germain Football Club, commonly referred to as Paris Saint-Germain or simply PSG, is a professional football club based in Paris, France. They compete in Ligue 1, the top division of French football. As France's most successful club, they have won over 40 official honours, including eleven league titles and one major European trophy. Their home ground is the Parc des Princes located in the 16th arrondissement of Paris near the commune Boulogne-Billancourt.
Saint-Germain-de-Livet is a commune south of Lisieux in the Calvados department in the Normandy region in northwestern France.
Mazzano is a comune in the province of Brescia, in Lombardy, northern Italy. The Municipality of Mazzano has a population of 12500 inhabitants and consists of three hamlets, Mazzano, Molinetto and Ciliverghe
Lepospondyli is a diverse taxon of early tetrapods. With the exception of one late-surviving lepospondyl from the Late Permian of Morocco, lepospondyls lived from the Early Carboniferous (Mississippian) to the Early Permian and were geographically restricted to what is now Europe and North America. Five major groups of lepospondyls are known: Adelospondyli; Aïstopoda; Lysorophia; Microsauria; and Nectridea. Lepospondyls have a diverse range of body forms and include species with newt-like, eel- or snake-like, and lizard-like forms. Various species were aquatic, semiaquatic, or terrestrial. None were large, and they are assumed to have lived in specialized ecological niches not taken by the more numerous temnospondyl amphibians that coexisted with them in the Paleozoic. Lepospondyli was named in 1888 by Karl Alfred von Zittel, who coined the name to include some tetrapods from the Paleozoic that shared some specific characteristics in the notochord and teeth. Lepospondyls have sometimes been considered to be either related or ancestral to modern amphibians or to Amniota. It has been suggested that the grouping is polyphyletic, with aïstopods being primitive stem-tetrapods, while recumbirostran microsaurs are primitive reptiles.
Adelospondyli is an order of elongated, presumably aquatic, Carboniferous amphibians. They have a robust skull roofed with solid bone, and orbits located towards the front of the skull. The limbs were almost certainly absent, although some historical sources reported them to be present. Despite the likely absence of limbs, adelospondyls retained a large part of the bony shoulder girdle. Adelospondyls have been assigned to a variety of groups in the past. They have traditionally been seen as members of the subclass Lepospondyli, related to other unusual early tetrapods such as "microsaurs", "nectrideans", and aïstopods. Analyses such as Ruta & Coates (2007) have offered an alternate classification scheme, arguing that adelospondyls were actually far removed from other lepospondyls, instead being stem-tetrapod stegocephalians closely related to the family Colosteidae.
Saint-Germain-du-Seudre is a small historic town on the Gironde estuary. It is a commune in the Charente-Maritime department in southwestern France.
The Stade Jean-Bouin is a multi-purpose stadium in the 16th arrondissement of Paris, France. The 19,904 capacity facility is located across the street from the much larger Parc des Princes, and is used mostly for rugby union, but is also used for American football and association football matches. It is the home stadium of Stade Français, Paris Musketeers and FC Versailles.
Diplocaulus is an extinct genus of lepospondyl amphibians which lived from the Late Carboniferous to the Late Permian of North America and Africa. Diplocaulus is by far the largest and best-known of the lepospondyls, characterized by a distinctive boomerang-shaped skull. Remains attributed to Diplocaulus have been found from the Late Permian of Morocco and represent the youngest-known occurrence of a lepospondyl.
The Diplocaulidae is an extinct family of "nectridean" tetrapodomorphs that arose during the Late Carboniferous and died out in the Late Permian. They are distinguished by the presence of strange, horn-like protrusions jutting out from the rear of their skulls; in some genera said protrusions gave their heads an almost boomerang-like outline.
Nectridea is the name of an extinct order of lepospondyl tetrapods from the Carboniferous and Permian periods, including animals such as Diplocaulus. In appearance, they would have resembled modern newts or aquatic salamanders, although they are not close relatives of modern amphibians. They were characterized by long, flattened tails to aid in swimming, as well as numerous features of the vertebrae.
Diploceraspis is a genus of diplocaulid nectrideans. It lived in North America during the Permian period. It closely resembles its relative, Diplocaulus. It generally sports the same features as Diplocaulus, though it was smaller, measuring over 46 cm. Beerbower originally recognised two species, D. burkei and D. conemaughensis, but they are no longer regarded as being distinct from one another as their size ranges were found to overlap. Other species include D. meritae from Nebraska and an indeterminate species from Oklahoma. Diplocaulus minimus of Late Permian Morocco may be of this genus.
Saint-Germain-sous-Doue is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.
Saint-Germain-sur-École is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.
Saint-Germain-sur-Morin is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.
Saint-Germain-sur-Eaulne is a commune in the Seine-Maritime department in the Normandy region in northern France.
Saint-Germain-Lembron is a commune in the Puy-de-Dôme department in the Auvergne-Rhône-Alpes region in central France.
Arizonerpeton is an extinct genus of nectridean tetrapodomorphs. It contains a single species, Arizonerpeton wellsi. It lived in what is now the Swisshelm Mountains of modern-day Arizona, United States. This locality belongs to the Black Prince Limestone Formation, which is dated to the middle Pennsylvanian sub-period of the Carboniferous period.
Scincosaurus is an extinct genus of nectridean tetrapodomorphs within the family Scincosauridae.
Holospondyli is a proposed clade of lepospondyls from the Early Carboniferous to the Late Permian that includes the aistopods, the paraphyletic nectrideans, and possibly also Adelospondyli. However, aistopods have since been recovered as stem-tetrapods more primitive than temnospondyls or other groups of lepospondyls.
Ductilodon is an extinct genus of nectridean tetrapodomorphs in the family Diplocaulidae. The type and only species Ductilodon pruitti was named in 1999 from the Early Permian of Kansas. Distinguishing features of Ductilodon include horns that project backward from the skull and an arched row of teeth on the palate. Ductilodon is most closely related to the diplocaulids Diplocaulus and Diploceraspis.
| ||||||||||||||||
| ||||||||||||||||
 | This article about a tetrapodomorph is a stub. You can help Wikipedia by expanding it. |
 | This article related to a Permian animal is a stub. You can help Wikipedia by expanding it. |
