Chordates Part 3

Which of the following evolutionary adaptation is the OLDEST in Vertebrates?

• Appearance of a lateral line/Ampullae of Lorenzini

• Appearance of jaws

• Appearance of pelvic and pectoral fins

• Appearance of bone

Which of the following evolutionary adaptations lead to the appearance of the Osteichthyes?

• Appearance of jaws

• Appearance of vertebrae

• Appearance of bone

• Appearance of humerus, radius, and ulna

What are the two main divisions within the Osteichthyes?

• Chondrichthyes and Actinopterygii

• Chondrichthyes and Sarcopterygii

• Actinopterygii and Sarcopterygii

• Agnatha and Chondrichthyes

Which group of fish contains the greatest amount of species diversity and accounts for 50% of vertebrates overall?

• Teleostei

• Sarcopterygii

• Agnatha

• Chondrichthyes

Which group represent the earliest tetrapods?

• Turtles

• Mammals

• Amphibians

• Birds

This order of amphibians contains about 600 species, generally lack lungs and breathe through their skin, and often exhibit paedomorphosis

• Anura

• Urodela

• Apoda

• Testudimorpha

Crocodiles and birds are both part of the Diapsid group known as the

• Dinosauria

• Lepidosauria

• Archosauria

• Squamata

Which of the following animals is a dinosaur

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