Paleozoic Earth ] Back | Next >

 Ocean floor
 500 million years ago

Mean atmospheric O2
 63% of modern level

Mean atmospheric CO2
 16x pre-industrial level

Mean temperature
 7C above modern level


Paleozoic Earth - Giant Anomalocaris cruises the ocean floor; Drumian Stage; Ogygopsis Shale; Burgess Shale; metazoans- Natural History Illustration Geologic Time Scale

Eon: Phanerozoic
 Era: Paleozoic
  Period: Cambrian
   Epoch: Furongian
    Age: Paibian*



An anomalocaridid from the genus Anomalocaris cruises a Middle Cambrian ocean floor about 500 million years ago. Growing to over three feet long, Anomalocaris is believed to have been a predator whose diet included trilobites and may have been one of the earliest arthropods.

This image includes a trilobite from the species Olenoides serratus and sponges from the genus Vauxia and Wapkia. The small, flower-like animals (yes, like the sponges they are rooted animals) are from the genus Dinomischus. Above and behind the Anomalocaris is an ancient jellyfish.

*AKA Ibexian, Ayusokkanian, Sakian, Aksayan


Copyright Walter B. Myers. All rights reserved.

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