What Are The Major Groups Of Extinct Reptiles?

The lepidosaurs

What are the main reptile groups?

Reptiles, traditionally considered one of the major classes of the phylum Vertebrata, include three major groups:

turtles (Order Testudines), crocodilians (Order Crocodylia)

, and snakes and lizards (Order Squamata).

Are there any extinct reptiles?

• Pinta giant tortoise (Chelonoidis abingdonii)
• Galápagos tortoise (Chelonoidis spp.) ( …
• Réunion giant tortoise (Cylindraspis indica)
• Saddle-backed Mauritius giant tortoise (Cylindraspis inepta)
• Domed Rodrigues giant tortoise (Cylindraspis peltastes)
• Domed Mauritius giant tortoise (Cylindraspis triserrata)

What are the 3 largest groups of reptiles?

The major groups of living reptiles—the

turtles

(order Testudines), tuatara (order Rhynchocephalia [Sphenodontida]), lizards and snakes (order Squamata), and crocodiles (order Crocodylia, or Crocodilia)—account for over 8,700 species.

Which is the most important extinct group of reptiles?

Proganochelys

– Turtles and tortoises remain one of the most unchanged reptile groups, quite literally being “living dinosaurs” that truly walked among them.

What is the most rarest reptile?

The Abingdon Island giant tortoise Geochelone elephantopus abingdoni

is represented by a single living specimen, an aged male called `Lonesome George', making it the world's rarest reptile.

What is the most endangered reptile in the world 2020?

The Critically

Endangered Madagascar big-headed turtle

is the world's most Evolutionarily Distinct and Globally Endangered reptile.

What are the 4 reptile groups?

The four main reptile groups are the

Turtles and Tortoises, Snakes and Lizards, Crocodiles and Alligators, and Tuatara

(a single species more primitive than other reptile groups and found only in a group of small islands near New Zealand).

What is the largest living reptile?

Saltwater crocodiles

are the largest crocodile species in the world, and the largest living reptile in the world. 2. Male saltwater crocodiles have been recorded at lengths of 23 feet (7 m) and weights of 2,205 pounds (1,000 kg).

What is unique about reptiles?

Unlike amphibians, who have moist, slimy skin,

reptiles have dry, scaly skin

. Some reptiles have pronounced scales, like most snakes, while others have flesh that appears to be covered in small warts or horns. Their tough skin protects them against injury and prevents moisture loss in arid environments.

What is the biggest extinct lizard?

Megalania

is the largest terrestrial lizard known to have existed.

Are dinosaurs extinct?

Dinosaurs

went extinct about 65 million years ago

(at the end of the Cretaceous Period), after living on Earth for about 165 million years.

What is the largest Colubrid?

Indigo snake, (Drymarchon corais), docile, nonvenomous member of the family Colubridae found from the southeastern United States to Brazil. It is the largest snake in the United States—record length is 2.6 metres (8.5 feet)—and one of the largest of all colubrids.

What is the largest marine reptile?

Scientists said on Monday this

ichthyosaur

, which appears to be the largest marine reptile ever discovered, lived 205 million years ago at the end of the Triassic Period, dominating the oceans just as dinosaurs were becoming the undisputed masters on land. The bone, called a surangular, was part of its lower jaw.

Who is the king of reptiles?