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old trilobite speciesDiscover Magazine
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89% Informative
Trilobita, or ancient marine creatures often referred to as trilobites, swam through the seas and skittered across the sea floors millions of years ago and seem to testify to the foreignness of the past.
Research in Paleobiology reveals that these strange animals actually lived their lives at a familiar pace, growing at a super-slow rate like modern marine crustaceans.
The 450-million-year-old species, Triarthrus eatoni, took 10 years to grow to a length of approximately four centimeters .
Researchers worked withinformation from 295 trilobite fossils collected in New York state.
They completed a length-frequency analysis, an approach created to approximate the growth rates of living sea creatures that lack visible age indicators.
Researchers then compared their estimates of the growth of T. eatoni with corresponding information on growth of modern crustaceans.
The comparisons revealed relatively similar rates of growth.
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