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Color illustration of an ancient bivalve.
Slideshow

Rudist Reefs

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A rendering of an underwater marine scene from the Proterozoic Eon, featuring a creature that resembles a jellyfish and other organisms.
Photo

Ediacaran Community, Proterozoic Eon (2,500 - 542 Million Years Ago)

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Notice the pink tentacles, which “recliners” used to filter feed.
Photo

Recliner Rudists

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An illustration of the megalodon shark.
Photo

Ancient Giant Megatooth Shark

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Color illustration of an ancient bivalve.
Photo

Elevator Rudists

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Illustration of the extinct ammonite, related to the modern squid.
Photo

Ammonite

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World map during last ice age
Photo

Ice Age Map of the World

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An artistic rendering of an ocean landscape as it may have looked during the Archean Eon.
Slideshow

The Ocean Throughout Geologic Time, An Image Gallery

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Mistaken Point New Foundland
Audio

Ediacaran Fossils: One Species at a Time

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An archaeologist arranges a deep-sea core.
Photo

Sediment Cores

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A fossil of the ancient shark Falcatus falcatus
Photo

The Ancient Shark Falcatus falcatus

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Illustration of the Paleozoic shallow water habitat.
Photo

A Mississippian Marine Habitat (359 - 318 Million Years Ago)

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