I still have the book. I didn't have to check it out of the library since my husband already had a copy.
oh, that's handy. he just happened to have one laying around?
It has some stuff about horse evolution. I need to look at it again. Been kind of out of it lately with being sick and then getting ready for Christmas.
i know the feeling. i've been out spending all my money on other people.
I'm looking at it now, it has that same picture that you posted, or something very similar, with the horses hooves.
does it have more than four items? i know the book i checked out bird evolution had an entire series of dino-to-bird hips that spanned several million years and at least 7 distinct genuses of dinos, as well as modern birds. even that's leaving a lot out, but you it gives the general picture.
quote:
Early work suggested that horses constituted a single assemblage that progressed relatively steadily from the small sized Hyracotherium (Eohippus), with low-crowned teeth and four toes on the front feet and three on the rear, to the modern genus Equus, which has high-crowned teeth and whose manus and pes are reduced to a single toe. Subsequent research has demonstrated a much more complex radiation, with many divergent lineages of browsers and grazers overlapping one another in time.
well, that's kind of the old debate point. people expect evolution to go in a straight line, for whatever reason. it doesn't. it branches, sometimes into very, very complex cladograms. not all variations and species survive. had we all the evidence (realistically impossible) we could easily trace the exact route of horse lineage. realistically, we end up comparing species and noting commonalities, extrapolating how recent each is to their common ancestor.
thus the term "missing link." it's like we were to have me, and my uncle, but not my grandfather. we could figure out that my grandfather existed, even without him specifically.
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