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Chapter 2 addresses the fossil evidence for common descent.

The first part of the chapter I generally agree with.

In honor of the local Inuit people and the donor who helped fund the expeditions, the fossil was named There was a consensus that the divergence between some elpistostegalians (such as Tiktaalik or Panderichthys) and tetrapods might have occurred during the Givetian, 391-385 Myr ago. mie, Poland, that are unambiguously dated to the lowermost Eifelian (397 Myr ago).

Coeval with the earliest fossil tetrapods, trackways dating to the Late Devonian were evidence for their ability to walk or crawl on shores. This site (an old quarry) has yielded a dozen trackways made by several individuals that ranged from about 0.5 to 2.5 metres in total length, and numerous isolated footprints found on fragments of scree.

Taxonomists classify organisms into categories: species are the very lowest taxonomic category. As Roger Lewin (1988) explains in Several possible patterns exist for the establishment of higher taxa, the two most obvious of which are the bottom-up and the top-down approaches.

Last modified 13-Mar-2018 05:36