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Early development in Dendraster These micrographs illustrate interesting features of cleavage stages in the local sand dollar, Dendraster excentricus. Images belong to George von Dassow.

23 Diversity III: Invertebrates

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Early development in DendrasterThese micrographs illustrate interesting features of cleavage stages in the local sand dollar, Dendraster excentricus. Images belong to George von Dassow.

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Animals: Part I

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http://tolweb.org/tree/phylogeny.html

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Phylum: Porifera

Class: Hexactinellida

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Typical

Choanoflagellate

Copyright © Stephen Fairclough

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Phylum: Cnideria

Class: Scyphozoa

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Phylum: Platyhelminthes

Class: Turbellaria

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MOLLUSCA

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http://www.ted.com/talks/david_gallo_shows_underwater_astonishments.html

http://www.youtube.com/watch?v=1pJPnZFSy5o

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Annelida

http://www.youtube.com/watch?v=fWIvV9QlNow

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Phylum Arthropoda:

Contains 75-80% of all animal species.

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Phylum: Arthropoda

Subphylum: Chelicerata

Class: Merostomata

Class: Arachnida

Order: Aranea

Order: Scorpiones

Order: Opiliones

Order: Acari

Subphylum: Myriapoda Class: Chilopoda

Class: Diplopoda

Subphylum: Crustacea Class: Maxillopoda

Subclass: Cirripedia

Class: Malacostraca

Subclass: Decapoda

Subphylum: Hexapoda Class: Insecta

Order: Key ‘em out!

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Arthropoda:

Chelicerata

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Arthropoda: Miriapoda

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Arthropoda:

Crustacea

http://www.youtube.com/watch?v=Nd7o6ytz_LM

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Arthropoda: Hexapoda

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Echinodermata

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