Haikouichthys lanceolata is one of the oldest fossil chordates known. It shares with lampreys some specific features of the eye and eye muscles. From this, we can infer that Haikouichthys probably possessed . View Available Hint(s) Haikouichthys lanceolata is one of the oldest fossil chordates known. It shares with lampreys some specific features of the eye and eye muscles. From this, we can infer that Haikouichthys probably possessed . vertebrae and jaws a cranium and vertebrae, but no jaws or paired fins a cranium but no vertebrae segmental muscles but no cranium Submit Provide Feedback Next

a cranium and vertebrae, but no jaws or paired fins

Explanation:

Lamprey belongs to a group of jawless vertebrates known as agnatha. In addition to being jawless, they posses a structure known as notochord which is a general feature of all vertebrates. The notochord however, is surrounded by cartilage-like vertebral column. The also posses brain which is usually housed in a cranium.

Lamprey posses no paired fins unlike other fishes. The notochord helps the to move as well s supports their bodies.

Hence, if Haikouichthys lanceolata is similar to lamprey, it will probably posses a cranium and vertebrae, but no jaws or paired fins just like lamprey.

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