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Marine life during the Cambrian explosion. A giant Anomalocaris investigates a trilobite, while Opabinia looks on from the right, and the ‘walking cactus’ Diania crawls underneath.

Marine life during the Cambrian explosion. A giant Anomalocaris investigates a trilobite, while Opabinia looks on from the right, and the ‘walking cactus’ Diania crawls underneath.

June 2013 : Hallucigenia is an extinct genus of animal found as fossils in the Middle Cambrian-aged Burgess Shale formation of British Columbia.

June 2013 : Hallucigenia is an extinct genus of animal found as fossils in the Middle Cambrian-aged Burgess Shale formation of British Columbia.

Exceedingly Rare Early Cambrian Redlichiid Trilobite  Aff Psedosaukianda lata;   Trilobites Order Redlichiida, Family Saukinadidae;   Geological Time: Lower Cambrian, Atabanian Stage;    60 mm long;   Fossil Site: Issafen Formation, Issafen, Morocco

Exceedingly Rare Early Cambrian Redlichiid Trilobite Aff Psedosaukianda lata; Trilobites Order Redlichiida, Family Saukinadidae; Geological Time: Lower Cambrian, Atabanian Stage; 60 mm long; Fossil Site: Issafen Formation, Issafen, Morocco

Anomalocaridids (model pictured) grew a third longer and survived 30 million years longer than thought.  Christine Dell'Amore    National Geographic News    Published May 27, 2011    Fossils of a meter-long (3.3-foot) prehistoric ocean predator have been found in southeastern Morocco.       The specimens include the largest yet of its kind and suggests the spiny, somewhat shrimplike beasts dominated pre-dinosaur seas for millions of years longer than thought.

Anomalocaridids (model pictured) grew a third longer and survived 30 million years longer than thought. Christine Dell'Amore National Geographic News Published May 27, 2011 Fossils of a meter-long (3.3-foot) prehistoric ocean predator have been found in southeastern Morocco. The specimens include the largest yet of its kind and suggests the spiny, somewhat shrimplike beasts dominated pre-dinosaur seas for millions of years longer than thought.

Gentle giants of the Cambrian period, scientists recently discovered the Tamisiocaris borealis (above) that lived about 520 million years ago.  Sort of a Cambrian period whale.

Gentle giants of the Cambrian period, scientists recently discovered the Tamisiocaris borealis (above) that lived about 520 million years ago. Sort of a Cambrian period whale.

Opabinia had five eyes and a single appendage extending from its head. Copyright Quade Paul - The Weird Youth of the Animal Kingdom (Slide Show) – Phenomena: The Loom

Opabinia had five eyes and a single appendage extending from its head. Copyright Quade Paul - The Weird Youth of the Animal Kingdom (Slide Show) – Phenomena: The Loom

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