Neopentadactyla
Neopentadactyla is a clade of tetrapods that includes all living amphibians and amniotes. They are characterized by having five digits on their limbs, although this number can be reduced in some species. This group is believed to have evolved from a common ancestor that lived in the Devonian period, about 385 million years ago.
Common Names
There are no common names specifically for Neopentadactyla, as it is a scientific clade.
Characteristics
Neopentadactyla is distinguished by several key features:
- Pentadactyl limbs: As the name suggests, Neopentadactyla have five digits on each limb, though the number can be reduced through evolution.
- Limb girdles: They possess well-developed pectoral and pelvic girdles that provide support for their limbs.
- Vertebral column: Their vertebral column is complex, with different types of vertebrae.
- Respiratory system: Neopentadactyla have lungs and, in some groups, skin that can assist in breathing.
- Circulatory system: They have a closed circulatory system with a four-chambered heart (in some amniotes).
Environment
Neopentadactyla have diversified into a wide range of environments, including freshwater, saltwater, and terrestrial habitats. They are found on all continents except Antarctica.
References
Wikipedia: Neopentadactyla
Phylogenetic Relationships of Extinct and Extant Tetrapods: A Phylogenetic Tree