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Lissamphibia
A class of amphibians with unique features such as two types of sensory papilla in the inner ear and pedicellate teeth.
Gymnophiona
A group of limbless amphibians characterized by cylindrical, segmented bodies and primarily fossorial lifestyles.
Caudata
Also known as Urodela, a group of amphibians with low slung bodies and long tails, encompassing both terrestrial and aquatic species.
Anura
The group of amphibians fully adapted for jumping locomotion, featuring a short body, broad head, and well-developed limbs.
Sauropsida
A clade including birds and reptiles, typically bipedal with a flow through respiratory system and secretion of uric acid.
Synapsida
A clade mostly consisting of quadrupedal organisms with tidal flow in lungs and urea secretion.
Testudines
A group characterized by shells, no teeth, and the ability to withdraw their heads inside their shells.
Lepidosauria
A group distinguished by diapsid or modified diapsid skulls and a transverse cloacal slit.
Sphenodontia
Lizard-like reptiles with an unmodified diapsid skull, overlapping ribs, and a parietal eye covered by scales.
Squamata
This group includes lizards, snakes, and amphisbensians, featuring unique kinetic movements in the skull.
Archosauria
A clade that includes extant birds and crocodylians.
Aves
A class of warm-blooded vertebrates commonly known as birds, along with their extinct relatives.
Mammalia
A class of animals characterized by a larger brain, higher metabolic rate, and cranial adaptations.
Monotremata
A group of egg-laying mammals with a sprawling posture and less stable body temperature.
Marsupalia
Mammals with a maternal abdominal pouch for nurturing underdeveloped young after birth.
Placentalia
The largest group of mammals, giving birth to live, more advanced young, with complex maternal-fetal connections.
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