meshachtige

Meshachtige, also known as meshachites, are a group of extinct, primitive mammals that lived during the Late Triassic and Early Jurassic periods, approximately 230 to 190 million years ago. They are considered one of the earliest known mammals, and their fossils provide valuable insights into the evolution of mammals from their reptilian ancestors.

Meshachtige are characterized by their small size, typically ranging from a few centimeters to about 15 centimeters in length. They had a unique combination of reptilian and mammalian features, including a long, snake-like body, a single bone in the lower jaw, and teeth that were adapted for a herbivorous diet. Their teeth were similar to those of early mammals, but they also retained some reptilian features, such as the presence of a tooth socket.

The most well-known meshachtige is Mesoaikosaurus, which was discovered in Germany in the 19th century. Other species include Erythrotherium and Prokennethalia. These animals are believed to have been nocturnal and may have lived in burrows, similar to modern-day shrews.

Meshachtige are significant in the study of mammal evolution because they represent a transitional form between reptiles and mammals. Their fossils help scientists understand the changes that occurred in the skull, teeth, and other features as mammals evolved from their reptilian ancestors. Despite their primitive nature, meshachtige played a crucial role in the diversification of mammals during the Mesozoic era.