Prehistoric Life

【Life of the Ordovician】Isotelus – At 72 cm, the Largest Trilobite Lived in Tropical Shallows

Prehistoric Life

【Prehistoric Life】Index – Life Through 4.6 Billion Years, in Order

Prehistoric Life

【Life of the Ordovician】Arandaspis – A Fish Known Only From Casts in Sandstone, With Not One Piece of Bone Left

Prehistoric Life

【Life of the Cambrian】Leanchoilia – The Whip-Armed Predator Once Written Off as an Eyeless Mud-Eater

Prehistoric Life

【Life of the Cambrian】Yunnanozoon – Reclassified Five Times in Thirty Years, and Still Unsettled

Prehistoric Life

【Life of the Cambrian】Myllokunmingia – The Oldest Fish in the Textbooks, Known From a Single Specimen

Prehistoric Life

【Life of the Cambrian】Marrella – 25,000 Specimens, and Still No Group to Put It In

Prehistoric Life

【Life of the Cambrian】Pikaia – Seventy Years as the Oldest Human Ancestor, and What Came After

Prehistoric Life

【Life of the Cambrian】Hallucigenia – Forty Years Upside Down and Back to Front

Prehistoric Life

【Life of the Cambrian】Halkieria – For 22 Years, Only the Scales Were Known

Prehistoric Life

【Life of the Cambrian】Haikouichthys – The Oldest Fish Had Four Eyes

Prehistoric Life

【Life of the Cambrian】Nectocaris – Not a Shrimp, Not a Fish, Not a Squid, but a Relative of Arrow Worms

Prehistoric Life

【Life of the Cambrian】Trilobites – Eyes With Lenses Made of Calcite Crystal

Prehistoric Life

【Life of the Cambrian】Saccorhytus – Why a 1 mm Sack With No Anus Was Called a Human Ancestor

Prehistoric Life

【Life of the Cambrian】Opabinia – The Reconstruction That Got Laughed At, and Then Became the Textbook

Prehistoric Life

【Life of the Cambrian】Ottoia – The Worm Whose Gut Contents Revealed a 500-Million-Year-Old Menu

Prehistoric Life

【Life of the Cambrian】Wiwaxia – A Mollusk’s Mouth on an Annelid’s Back

Prehistoric Life

【Life of the Cambrian】Aysheaia – The Shape Was Right From the Start; Only Its Identity Stayed Open

Prehistoric Life

【Life of the Cambrian】Anomalocaris – Described as Three Separate Animals: a Shrimp, a Jellyfish and a Sea Cucumber

Prehistoric Life

【Life of the Proterozoic】The Francevillian Biota – An Argument Over Whether It Was Alive at All, Fought in Chemistry

Prehistoric Life

【Life of the Proterozoic】Dickinsonia – Not a Jellyfish, Not a Worm, Not a Lichen

Prehistoric Life

【Life of the Proterozoic】Spriggina – Symmetrical at a Glance, but the Segments Are Half a Step Off

Prehistoric Life

【Life of the Proterozoic】Cyanobacteria – The Organism Behind the Worst Pollution Event in History

Prehistoric Life

【Life of the Proterozoic】Grypania – Worm Trail, Alga or Bacterium? 120 Years Without an Answer

Prehistoric Life

【Life of the Proterozoic】Kimberella – The Grazing Marks It Left, and Its Claim to Be an Early Mollusk

Prehistoric Life

【Life of the Proterozoic】Charniodiscus – A “Frond” Standing on a Seafloor Beyond the Reach of Light

Prehistoric Life

【Life of the Proterozoic】Tribrachidium – A Three-Fold Body Plan Found Nowhere in Living Animals

Prehistoric Life

【Life of the Proterozoic】Charnia – The Frond in the Rock That Received Wisdom Made Invisible

Prehistoric Life

【Life of the Proterozoic】Cloudina – Earth’s First Shell Already Had Holes in It

Prehistoric Life

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