1. Trilobites are a well-known fossil group of extinct marine arthropods that form the class Trilobita. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period (526 million years ago), and they flourished throughout the lower Paleozoic era before beginning a drawn-out decline to extinction when, during the Devonian, almost all trilobite orders, with the sole exception of Proetida, died out. Trilobites finally disappeared in the mass extinction at the end of the Permian about 250 million years ago. The trilobites were among the most successful of all early animals, roaming the oceans for over 270 million years.

    Source: Wikipedia

  1. naiomiallison likes this
  2. stetigst likes this
  3. with-her-regards reblogged this from anthrojoyce
  4. sister-mary-badass reblogged this from anthrojoyce and added:
    I ship these trilobites
  5. tyrannosaurus-regina reblogged this from cantankerouscatfish
  6. nyfxo likes this
  7. cantankerouscatfish reblogged this from thejives
  8. thejives reblogged this from anthrojoyce
  9. requiem-for-a-black-rose reblogged this from shychemist
  10. brienne-the-badass-of-tarth reblogged this from shychemist and added:
    Cutest damn fossil ever.
  11. disco-dancer-donna likes this
  12. kittenberryy reblogged this from shychemist
  13. kittenberryy likes this
  14. intangible1ove reblogged this from bhvfjgdfsyrddtr
  15. pastellieria reblogged this from shychemist
  16. shychemist reblogged this from anthrojoyce
  17. shychemist likes this
  18. anthrojoyce posted this