BIO 113 — Dinosaurs

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Virtual Museum: The Microbes

  Contents: Bacteria | Protozoans & Algae
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Fossil Bacteria


The earliest forms of life on earth date to nearly 4 billion years ago and were simple bacteria-like organisms. This section of tiger iron stromatolite is a chemical fossil that shows alternating layers of bacterial activity with abiotic conditions.

Australia

2.5 Ga (billion years ago)

stromatolite

A Composite Stromatolite

700 Ma old Snowslip Formation, Glacier Nat Park, MT

Museum of the Rockies, Boseman, MT

stromatolite

A Cyanobacteria (= Blue-green algae) Stromatolite

Ordovician Period of Bolivia

Black Hills Institute Museum, SD

stromatolite

Condonophycus austini Stromatolite

Pennsylvanian Epoch, Carboniferous Period

Wyoming

Black Hills Institute Museum, SD

stromatolite

The dark splotches are mostly the cyanobacterium Morania fragmenta

House Range, Millard Co., UT

Middle Cambrian, Wheeler Formation, 505 Ma

personal collection

cyanobacteria

Fossil Protozoans & Algae


Green algae, Yuknessia simplex (Class Chlorophyta)

House Range, Millard Co., UT

Middle Cambrian, Wheeler Formation, 505 Ma

personal collection

Yuknessia algae
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This page last updated 19 July 2020 by Udo M. Savalli ()
Images and text © Udo M. Savalli. All rights reserved.