Fish Fossil Yields Anatomical Clues on How Animals of the Sea Made It to Land

In a new study of a fossil fish that lived 375 million years ago,Tiktaalik roseae, scientists are finding striking evidence of the intermediate steps by which some marine vertebrates evolved into animals that walked on land.  The New York Times’s science pages discuss a research study of Tiktaalik.

In a report being published Thursday in the journal Nature that the research exposed delicate details of the creature’s head and neck, confirming and elaborating on its evolutionary position as “an important stage in the origin of terrestrial vertebrates.” There was much more to the complex transition than fins evolving into sturdy limbs. The head and braincase were changing, a mobile neck was emerging and a bone associated with underwater feeding and gill respiration was diminishing in size, a beginning of the bone’s adaptation for an eventual role in hearing for land animals.

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2 Responses to Fish Fossil Yields Anatomical Clues on How Animals of the Sea Made It to Land

  1. ivorygirl says:

    BUT??? This is not a true true intermediate fossil,I want to see a crocoduck or a dinabird.Then if I can find it in the bible I will be convinced.

  2. firemancarl says:

    Oh noes! ABO and whats his name must be shredding every copy of the NYT they can get their hands on.

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