These are three different sized trilobites ("try-low-bites") - 10 inches, 3 inches, and 1 inch. They are the oldest known animal that had developed eyes. They first appeared about 525 million years ago. (5 years and 3441 days ago)
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Interesting subjects. Good luck!
Lots of history here author...
How in Gods name those artifacts came to your possession???
You are not that old like you find them on a beach or something...lol
Never saw that before in my life...
Really interesting!!!
Different subject.. however, demonstration of size difference is missing here as we don't know head and tail of the species...
ummmm, I'm not sure why you'd need to know the head from the tail to see these are different sizes. But, as with most animals of this type, the tail is the narrowing, tapered end.
Howdie stranger!
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