'Soft bodied' diaporamas de présentation

ZOO4 HONOURS

ARTHROPOD ORIGINS AND RELATIONSHIPS. ZOO4 HONOURS. Mark Blaxter 2007-2008 www.nematodes.org. Arthropod origins and relationships. Three main questions: Is Arthropoda a monophyletic group? Which non-arthropod groups are most closely related to Arthropoda?

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Precambrian Eukaryotes

Precambrian Eukaryotes. Acritarchs Ediacaran Vendian. Cysts of unicellular eukaroytes, perhaps algae or egg cases of multicellular orgs. 1800 my through Devonian. Acritarchs. Ediacaran. 600 my-545 my Soft-bodied Many organisms of uncertain affinity.

806 views • 65 slides

Precambrian Eukaryotes

Precambrian Eukaryotes. Acritarchs Ediacaran Vendian. Cysts of unicellular eukaroytes, perhaps algae or egg cases of multicellular orgs. 1800 my through Devonian. Acritarchs. Ediacaran. 600 my-545 my Soft-bodied Many organisms of uncertain affinity.

675 views • 65 slides

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Introduction to Zoology

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Lesson Overview

Lesson Overview. 26.1 Invertebrate Evolution and Diversity. Origins of the Invertebrates. For roughly 3 billion years after the first prokaryotic cells evolved, all prokaryotes and eukaryotes were single-celled.

416 views • 18 slides