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trilobites

Researchers: Trilobites breathed through their legs

How this finding situates trilobites "more securely in between older arthropods ... and crustaceans" is unclear. Apparently, crustaceans don’t breathe through their legs. Did the older arthropods breathe through THEIR legs? In any event, this find implies that the crustaceans underwent a dramatic switch in breathing mechanics, of which we apparently don’t have an account. How could we? We only found out about what the trilobites do very recently. Read More ›

Trilobites at 429 mya had eyes like bees

Note that we are told that the find “helps track the evolution of eyes and vision in arthropods over time” but in this case, it appears that their wasn’t much evolution: They “developed apposition compound eyes during the earliest evolutionary stages of the group and stuck with this design throughout their history.” No matter the history, Darwin must be placated. Read More ›