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Waggoner Ranch Formation
The Waggoner Ranch Formation is a geologic formation in northern Texas. It preserves fossils dating back to the Artinskian to Kungurian stages of the Permian period.Waggoner Ranch Formation at .org Fossil content The following fossils have been uncovered from the formation: ;Synapsids * '''' * '' Glaucosaurus megalo ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness (geology), thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiacodon
''Ophiacodon'' (meaning "snake tooth") is an extinct genus of synapsid belonging to the family Ophiacodontidae that lived from the Late Carboniferous to the Early Permian in North America and Europe. The genus was named along with its type species ''O. mirus'' by paleontologist Othniel Charles Marsh in 1878 and currently includes five other species. As an ophiacodontid, ''Ophiacodon'' is one of the most basal synapsids and is close to the evolutionary line leading to mammals. Description ''Ophiacodon'' has a large skull with a deep snout. It has the longest skull of any early synapsid, reaching up to in one specimen. The jaws are lined with many small teeth. It was larger than most other tetrapods (four-limbed vertebrates) of its time, ranging from in length and in weight. Specimens of ''Ophiacodon'' vary greatly in size. These differences in size were once used to distinguish species, but are now recognized as ontogenetic variations related to the ages of individuals. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Texas
This article contains a list of fossil-bearing stratigraphic units in the state of Texas, U.S. Sites See also * Paleontology in Texas References * * {{DEFAULTSORT:Fossiliferous stratigraphic units in Texas Fossil Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ... Texas geography-related lists United States geology-related lists Geology of Texas .Stratigraphic units ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diplocaulus
''Diplocaulus'' (meaning "double caul") 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. Description ''Diplocaulus'' had a stocky, salamander-like body, but was relatively large, reaching up to in length. Although a complete tail is unknown for the genus, a nearly complete articulated skeleton described in 1917 preserved a row of tail vertebrae near the head. This was construed as circumstantial evidence for a long, thin tail capable of reaching the head if the animal was curled up. Most studies since this discovery have argued that Anguilliform, anguiliform (eel-like) tail movement was the main force of locomotion uti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diadectes
''Diadectes'' (meaning ''crosswise-biter'') is an extinct genus of large reptiliomorphs or synapsids that lived during the early Permian period (Artinskian-Kungurian stages of the Cisuralian epoch, between 290 and 272 million years ago). ''Diadectes'' was one of the first herbivorous tetrapods, and also one of the first fully terrestrial vertebrates to attain large size. Description ''Diadectes'' was a heavily built animal, up to long, with a thick-boned skull, heavy vertebrae and ribs, massive limb girdles, and short, robust limbs. The nature of the limbs and vertebrae clearly indicates a terrestrial animal. The rib cage was assumed to be barrel-shaped, but new fossils show the ribs were actually sticking out to the sides. Paleobiology It possesses some characteristics of reptilians and amphibians, combining a reptile-like skeleton with a more primitive, seymouriamorph-like skull. ''Diadectes'' has been classified as belonging to the sister group of the amniotes. Among ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reiszorhinus
''Reiszorhinus'' is an extinct genus of Early Permian captorhinid known from the United States. The type species is ''Reiszorhinus olsoni''. Fossils have been found from the Waggoner Ranch Formation in north-central Texas. It is distinguishable by its recurved teeth and extremely large Meckelian foramen on the inner surface of the lower jaw. It has been considered a primitive member of its family because it has a single tooth along the margins of the jaws. While most single-tooth-rowed captorhinids are small, ''Reiszorhinus'' is relatively large. However, ''Reiszorhinus'' differs from other large captorhinids in that the cheek region is not wide and expanded. ''Reiszorhinus olsoni'' was first named in 2010. Specimens belonging to the species were previously misidentified as those of the similar captorhinid ''Labidosaurus hamatus''. ''Reiszorhinus'' is one of the most basal captorhinids, along with the genera ''Romeria Christianity has a strong tradition of pilgrimages, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protocaptorhinus
''Protocaptorhinus'' is an extinct genus of Early Permian (Cisuralian epoch) captorhinid reptile known from Texas of the United States. It is known from the holotype MCZ 1478, a three-dimensionally preserved partial skull. It was collected in the Rattlesnake Canyon site from the Petrolia Formation. It was first named by Clark and Carroll in 1973 and the type species is ''Protocaptorhinus pricei''. The generic name means "first ''Captorhinus''" (from Greek) and the specific name honours Llewellyn Ivor Price. See also * Geology of Wichita Falls, Texas The exposed strata at the surface in and around Wichita Falls are the products of one ancient period of deposition with a modest amount of recent and modern alteration. In all cases, the strata are products of terrigenous (non-marine) environments ... References Fossils of the United States Permian reptiles of North America Fossil taxa described in 1973 Captorhinids Prehistoric reptile genera {{permian-reptile-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pantylus
''Pantylus'' (from el, παν , 'all' and el, τύλος , 'knob') is an extinct lepospondyl amphibian from the Permian period of North America. ''Pantylus'' was probably a largely terrestrial animal, judging from its well-built legs. It was about long, and resembled a lizard with a large skull and short limbs. It had numerous blunt teeth, and probably chased after invertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ... prey. References External links Skull cast Recumbirostrans Cisuralian amphibians of North America Taxa named by Edward Drinker Cope Fossil taxa described in 1881 {{Lepospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Captorhinus
''Captorhinus'' (from el, καπτō , 'to gulp down' and el, ῥῑνός , 'nose') is an extinct genus of captorhinid reptiles that lived during the Permian period. Its remains are known from Oklahoma, Texas, Europe, India, the Pedra de Fogo Formation, Parnaíba Basin, Brazil and the Madumabisa Mudstone, Zambia. Description While there are several forms of ''Captorhinus'', there are three main species that are the best known. The previously mentioned ''Captorhinus aguti'' is the type species of ''Captorhinus'', but there is also a fair amount of material collected on ''Captorhinus magnus'' and ''Captorhinus laticeps''. The most distinguishable trait of ''Captorhinus'' is its namesake: the hooking of the snout from prominent ventral angulation of the premaxillary process. Other notable characteristics include the dorsally positioned alary process of the jugal on the medial surface and flushed with the orbital margin, the retroarticular process longer anteroposteriorly th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araeoscelis
''Araeoscelis'' (from el, αραιά , 'thin' and el, σκελίς , 'ribs of beef') is an extinction, extinct genus of reptile, and one of the earliest diapsids. Fossils have been found in the Nocona Formation, Nocona, Arroyo Formation, Arroyo and Waggoner Ranch Formations in Texas, dating to the Cisuralian, Early Permian. Two species have been described, ''A. casei'' and ''A. gracilis''. Description ''Araeoscelis'' was around long, and superficially resembled a modern lizard. It differed from earlier forms, such as ''Petrolacosaurus'', in that its teeth were larger and blunter; possibly they were used for cracking insect carapaces. Unlike its close relatives, which exhibit the two pairs of skull openings characteristic of diapsids, in ''Araeoscelis'' the lower pair of temporal fenestrae were closed with bone, resulting in a euryapsid condition. This would have made the skull more solid, presumably allowing a more powerful bite. Ichnology Footprints found in Nova Scoti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trimerorhachis
''Trimerorhachis'' is an extinct genus of dvinosaurian temnospondyl within the family Trimerorhachidae. It is known from the Early Permian of the southwestern United States, with most fossil specimens having been found in the Texas Red Beds. The type species of ''Trimerorhachis'', ''T. insignis'', was named by American paleontologist Edward Drinker Cope in 1878. Cope named a second species from Texas, ''T. mesops'', in 1896. The species ''T. rogersi'' (named in 1955) and ''T. greggi'' (named in 2013) are also from Texas, and the species ''T. sandovalensis'' (named in 1980) is from New Mexico. Description The length of the largest specimens of ''Trimerorhachis'' is estimated to have been almost a metre (3.3 feet) in length. ''Trimerorhachis'' has a large triangular head with upward-facing eyes positioned near the front of the skull. The trunk is long and the limbs are relatively short. The presence of a branchial apparatus indicates that ''Trimerorhachis'' had external gills in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eryops
''Eryops'' (; from Greek , , 'drawn-out' + , , 'face', because most of its skull was in front of its eyes) is a genus of extinct, amphibious temnospondyls. It contains the single species , the fossils of which are found mainly in early Permian (about 295 million years ago) rocks of the Texas Red Beds, located in Archer County, Texas. Fossils have also been found in late Carboniferous period rocks from New Mexico. Several complete skeletons of ''Eryops'' have been found in lower Permian rocks, but skull bones and teeth are its most common fossils. Description ''Eryops'' averaged a little over long and could grow up to , making them among the largest land animals of their time. Adults weighed between . The skull was proportionately large, being broad and flat and reaching lengths of . It had an enormous mouth with many curved teeth like the frog. Its teeth had enamel with a folded pattern, leading to its early classification as a "labyrinthodont" ("maze toothed"). The sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
