Question

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 _____.

A. vertebrae and jaws
B. a cranium and vertebrae, but no jaws or paired fins
C. a cranium but no vertebrae
D. segmental muscles but no cranium

Answer 1

Option (B) is Right Answer

Step-by-step explanation:

(B) A cranium and vertebrae, but no jaws or paired fins

• Haikouella fossils are found in relationship with Haikouichthys and Myllokunmingia that by consensus are viewed as the oldest seasoned known genuine craniates and probably the oldest fishes
• Haikouichthys is a terminated types of craniate which had a place with group of animals called fish
• It had been accepted that Haikouichthys have lived 525 million years prior during the Early Cambrian time period
• Haikouichthys is about 2.5 cm (1 in) long and is smaller than Myllokunmingia, another putative chordate that originates from similar beds