Lower Maleri Formation
Encyclopedia
The Lower Maleri Formation is a sedimentary rock formation found in Andhra Pradesh
, India
. It is the lowermost member of the Pranhita–Godavari Basin
. It is of late Carnian
to early Norian
age (Upper Triassic), and is notable for its fossil
s of early dinosaur
s, including the basal
saurischian (possible theropod) Alwalkeria
.
and cf. Typothorax
have also been recovered from it.
Andhra Pradesh
Andhra Pradesh , is one of the 28 states of India, situated on the southeastern coast of India. It is India's fourth largest state by area and fifth largest by population. Its capital and largest city by population is Hyderabad.The total GDP of Andhra Pradesh is $100 billion and is ranked third...
, India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...
. It is the lowermost member of the Pranhita–Godavari Basin
Pranhita–Godavari Basin
The Pranhita–Godavari Basin is a geological formation in India whose strata date back to the Late Triassic and the Early Jurassic. Dinosaur remains are among the fossils that have been recovered from the formation...
. It is of late Carnian
Carnian
The Carnian is the lowermost stage of the Upper Triassic series . It lasted from about 228.7 till 216.5 million years ago . The Carnian is preceded by the Ladinian and is followed by the Norian...
to early Norian
Norian
The Norian is a division of the Triassic geological period. It has the rank of an age or stage . The Norian lasted from 216.5 ± 2.0 to 203.6 ± 1.5 million years ago. It was preceded by the Carnian and succeeded by the Rhaetian.-Stratigraphic definitions:The Norian was named after the Noric Alps in...
age (Upper Triassic), and is notable for its fossil
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...
s of early dinosaur
Dinosaur
Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...
s, including the basal
Basal (phylogenetics)
In phylogenetics, a basal clade is the earliest clade to branch in a larger clade; it appears at the base of a cladogram.A basal group forms an outgroup to the rest of the clade, such as in the following example:...
saurischian (possible theropod) Alwalkeria
Alwalkeria
Alwalkeria is a genus of basal saurischian dinosaur from the Late Triassic of India. It was a small bipedal omnivore.This dinosaur was originally named Walkeria maleriensis by Sankar Chatterjee in 1987, in honor of famous British paleontologist Alick Walker and the Maleri Formation, in which its...
.
Vertebrate fauna
cf. AngistorhinusAngistorhinus
Angistorhinus is an extinct genus of phytosaur known from the Late Triassic period of Texas and Wyoming, USA. It was first named by Mehl in 1913 and the type species is Angistorhinus grandis. Other species from Texas and Wyoming, A. alticephalus , A. gracilis and A...
and cf. Typothorax
Typothorax
Typothorax is an extinct genus of aetosaur that lived in the Late Triassic. Its remains have been found in North America. Two species are known: T. coccinarum, the type species, and T. antiquum.-Description:...
have also been recovered from it.
Vertebrate Vertebrate Vertebrates are animals that are members of the subphylum Vertebrata . Vertebrates are the largest group of chordates, with currently about 58,000 species described. Vertebrates include the jawless fishes, bony fishes, sharks and rays, amphibians, reptiles, mammals, and birds... s reported from the Lower Maleri Formation |
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Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Alwalkeria Alwalkeria Alwalkeria is a genus of basal saurischian dinosaur from the Late Triassic of India. It was a small bipedal omnivore.This dinosaur was originally named Walkeria maleriensis by Sankar Chatterjee in 1987, in honor of famous British paleontologist Alick Walker and the Maleri Formation, in which its... |
A. maleriensis |
|
"Partial skull and postcranial remains." |
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Exaeretodon Exaeretodon Exaeretodon is a genus of traversodontid cynodont; several species are known, from various formations. E. argentinus, E. frenguelli, and E. vincei are from the Carnian-age Ischigualasto Formation of Argentina. E. major and E. riograndensis are from the Ladinian-age portion of the Santa Maria... |
E. statisticae |
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Hyperodapedon Hyperodapedon Hyperodapedon is a genus of rhynchosaur from the late Triassic period . The type species of Scaphonyx , Scaphonyx fischeri that once thought to be a dinosaur, is now known to be based on dubious material and therefore should be a nomen dubium... |
H. huxleyi |
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Malerisaurus Malerisaurus Malerisaurus is an extinct genus of prolacertiform archosauromorph known from Andhra Pradesh of India and Texas of the USA.-Description:... |
M. robinsonae |
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Massospondylus Massospondylus Massospondylus and ) is a genus of prosauropod dinosaur from the early Jurassic Period . It was described by Sir Richard Owen in 1854 from remains found in South Africa, and is thus one of the first dinosaurs to have been named... |
M. hislopi |
|
"Isolated vertebrae." |
Later found to be indeterminate prosauropod remains. |
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Paleorhinus Paleorhinus Paleorhinus was a genus of small phytosaur, a large order of semi-aquatic, crocodile-like animals that lived in the Late Triassic, specifically the earlier Late Carnian period. The reptiles lived throughout Europe, North America, and North Africa. This genus usually also includes the more... |
P. hislopi |
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Plateosaurus Plateosaurus Plateosaurus is a genus of plateosaurid dinosaur that lived during the Late Triassic period, around 216 to 199 million years ago, in what is now Central and Northern Europe. Plateosaurus is a basal sauropodomorph dinosaur, a so-called "prosauropod"... |
Indeterminate |
|
Later found to be indeterminate prosauropod remains. |
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