the.com/trilobite
survived three apocalypses for 270 million years, then missed the fourth by a whisker
means An extinct marine arthropod with a segmented, three-lobed shell that scuttled across ancient seafloors for hundreds of millions of years, now found everywhere as fossils.
from From the Greek 'tri-' (three) and 'lobos' (lobe), naming the creature for the three lengthwise lobes that divide its body — a central ridge flanked by two side panels. The name was coined by naturalists in the early 19th century as these fossils piled up on collectors' shelves; 'lobos' is the same root that gives us 'lobe' of the ear and the brain, all of them meaning a rounded, hanging part.
- eye material
- saw through lenses made of solid calcite crystal
- reign
- outlasted dinosaurs by over 200 million years
- defense move
- rolled into a ball like a pillbug
- species count
- over 20,000 known kinds existed
- final exit
- wiped out in the Great Dying, pre-dinosaur
phacops rana — trilobite species from the devonian period, ohio and new york, found in thousands in shale deposits
trilobite burgess shale — middle cambrian fossils from 508 million years ago in british columbia, canada, showing soft-body preservation
paradoxides davidis — large trilobite from middle cambrian morocco and czech republic, reaching 17 inches long