Which of the following is the correct classification for the following chordate animal: These animals are chordates but do not have a backbone or cranium.  They have all five features of chordates into adulthood.  The notochord extends into its head.   Question 27 options:

Given that modern echinoderms and chordates look nothing alike, what factors have led zoologists to propose a close evolutionary relationship between these two phyla?

These are images of the Taung Child, an Australopithecus africanus fossil discovered in South Africa by Raymond Dart. a) Name two features that would have indicated to Dr. Dart that this fossil was very ape-like.b) Name two features that would have seemed very human-like to Dr. Dart. (First Picture is skull and second is Brain)

What are examples of the following groups of vertebrates: Chondrichthyes, Actinopterygii, Actinistia, Dipnoi, and Tetrapoda? How many species are in each of the above groups? Which one has the most species? When did the first vertebrates appear, and when did they first live on land? Where do we find the earliest fossils of vertebrates, and where do we find the earliest fossils of terrestrial (land-living) vertebrates? What are the following and how are they related to humans: Pongo, Gorilla, Pan, Sahelanthropus, Ardipithecus, Australopithecus, Homo erectus, and Homo neanderthalensis? Which of these is our closest living relative? What are some of the traits that these organisms share with us? When and where did each of the extinct forms above live? What does this tell us about when our lineage split from the most recent ancestor we share with our closest living relative?