**Unicauda**
**Definition**
Unicauda is a genus of extinct prehistoric amphibians known from fossil records. It belongs to the group of early tetrapods that lived during the Paleozoic era.
**Overview**
Unicauda is classified within the order Temnospondyli, a diverse group of early amphibians that thrived from the Carboniferous to the Triassic periods. These amphibians are characterized by their distinctive skeletal features, including a single tail vertebra, which is reflected in the genus name „Unicauda,” meaning „one tail.” Fossils attributed to Unicauda have provided valuable insights into the evolution of early amphibians and their adaptation to terrestrial environments.
**Paleontological Significance**
The study of Unicauda contributes to understanding the transition from aquatic to terrestrial life in vertebrate history. Its morphology suggests a semi-aquatic lifestyle, bridging the gap between fully aquatic ancestors and more terrestrial descendants. Fossil evidence primarily comes from sedimentary rock formations dating back to the late Paleozoic era.
**Meta Description**
Unicauda is an extinct genus of early amphibians from the Paleozoic era, notable for its unique tail structure. It offers important insights into amphibian evolution and the transition to terrestrial life.