Learning Journal 16 - Fossils and Geologic Time

Learning Journal 16 - Fossils and Geologic Time - Links Go...

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Links: Go Question 1 Correct 2.00 points out of 2.00 Flag question My home MEA 101 (003) Fall, 2014 Module 5 Learning Journal 16 ­ Fossils and Geologic Time QUIZ NAVIGATION Finish review Started on Thursday, October 30, 2014, 5:54 PM State Finished Completed on Thursday, October 30, 2014, 6:03 PM Time taken 8 mins 9 secs Marks 4.75/6.00 Grade 3.17 out of 4.00 ( 79 %) Read the abbreviated news article below and answer the questions that follow. Scientists Call Fish Fossil the 'Missing Link' , By John Wilford, New York Times, April 5, 2006 Scientists have discovered fossils of a 375 million­year­old fish, a large scaly creature not seen before, that they say is a long­sought "missing link" in the evolution of some fishes from water to a life walking on four limbs on land. Several well­preserved skeletons of the fossil fish were uncovered in sediments of former stream beds in the Canadian Arctic, 600 miles from the North Pole, it is being reported on Thursday in the journal Nature. The skeletons have the fins and scales and other attributes of a giant fish, four to nine feet long. But on closer examination, scientists found telling anatomical traits of a transitional creature, a fish that is still a fish but exhibiting changes that anticipate the emergence of land animals — a predecessor thus of amphibians, reptiles and dinosaurs, mammals and eventually humans. The scientists described evidence in the forward fins of limbs in the making. There are the beginnings of digits, proto­wrists, elbows and shoulders. The fish also had a flat skull resembling a crocodile's, a neck, ribs and other parts that were similar to four­legged land animals known as tetrapods.
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