Lagerpeton
Encyclopedia
Lagerpeton is a genus of basal dinosauromorph
from the Ladinian
(Middle Triassic
). Lagerpeton is known from several specimens of hindlimbs, hips
, vertebrae, and feet. It was about 0.7 metres (2 ft) long and was found in the Chañares Formation of Argentina
. It has unique feet, with an unusually long fourth toe. The type species
, Lagerpeton chanarensis, was described by Romer in 1971. It was related to Dromomeron
, known from Late Triassic
rocks of the southwestern United States
.
Dinosauromorpha
Dinosauromorpha is the name of a clade of archosaurs that includes the closest relatives of dinosaurs, and the order Dinosauria itself. Basal forms include Saltopus, Marasuchus, the perhaps identical Lagosuchus, the lagerpetonids Lagerpeton from the Ladinian of Argentina and Dromomeron from the...
from the Ladinian
Ladinian
The Ladinian is a stage and age in the Middle Triassic series or epoch. It spans the time between 237 ± 2 Ma and 228 ± 2 Ma...
(Middle Triassic
Triassic
The Triassic is a geologic period and system that extends from about 250 to 200 Mya . As the first period of the Mesozoic Era, the Triassic follows the Permian and is followed by the Jurassic. Both the start and end of the Triassic are marked by major extinction events...
). Lagerpeton is known from several specimens of hindlimbs, hips
Hip (anatomy)
In vertebrate anatomy, hip refer to either an anatomical region or a joint.The hip region is located lateral to the gluteal region , inferior to the iliac crest, and overlying the greater trochanter of the femur, or "thigh bone"...
, vertebrae, and feet. It was about 0.7 metres (2 ft) long and was found in the Chañares Formation of Argentina
Argentina
Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...
. It has unique feet, with an unusually long fourth toe. The type species
Type species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...
, Lagerpeton chanarensis, was described by Romer in 1971. It was related to Dromomeron
Dromomeron
Dromomeron is a genus of lagerpetonid dinosauromorph archosaur from Late Triassic-age rocks of the Southwestern United States. It is known from partial remains, largely from the hindlimbs,, which indicate an animal with an overall length of less than 1.0 meters...
, known from Late Triassic
Late Triassic
The Late Triassic is in the geologic timescale the third and final of three epochs of the Triassic period. The corresponding series is known as the Upper Triassic. In the past it was sometimes called the Keuper, after a German lithostratigraphic group that has a roughly corresponding age...
rocks of the southwestern United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
.