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On "Pets" and "Its"

Animal Person

Here are some observations: When reading a book about gorillas to/with a seven-year old, I was struck by the mixed messages the book sent. Here 's the book, and in the preview you can see that in the beginning when the gorilla being described is male he is referred to as "he." Also, the have families (as if other animals don't).

Gorillas 100
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What happened with Archaeopteryx?

10,000 Birds

This has happened before, Archaeopteryx and the bird family tree have had an often tenuous relationship. If you lay out all the mandibles and maxilla of all the mammals, you could construct a phylogeny that would be a pretty good first stab at a reasonable mammal family tree. That’s what Archaeopteryx is.

Mammals 242