The image below shows four related organisms found in the fossil record. Eusthenopteron is an ancestral organism and the other
three organisms are its descendants. These organisms are all present in rock layers deposited between 300 and 400 million years
ago.
Eusthenopteron
Tulerpeton
Pederpes
Acanthostega
Adapted from image courtesy of J. Clack. 2009. Evolution Education and Outreach.
Which of the following statements is best supported by the image?
A. Acanthostega is a transitional form between Eusthenopteron and Tulerpeton.
B.
Pederpes is a transitional form between Eusthenopteron and Acanthostega.
C.
A transitional form between Acanthostega and Pederpes is missing from the fossil record.
D. A transitional form between Eusthenopteron and Pederpes is missing from the fossil record.