*Crustaceans and Echinoderms*
Similarities: They are both bilateral, but only when echinoderms are in their larvae stage.
Differences: Echinoderms have an endoskeleton while crustaceans have and exosketelton. Crustaceans have 5 legs, while an echinoderms has no body segiments. Crustaceans molt their outer layer and grow news ones. Echinoderms do not molt.
Examples of Crustaceans
White-banded Cleaner Shrimp
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Family: Alpheidae
Genus: Lysmata
Specific Name: amboinensis
Ghost Crab
Examples of Echinoderms
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Family: Ocypodoidea
Genus: Ocypode
Genus: Ocypode
Specific Name: ceratophthalma
Fiddler Crab
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Family: Ocypodoidea
Genus: Uca
Genus: Uca
Specific Name: pugnax
Examples of Echinoderms
California Sea Cucumber
Kingdom: Animalia
Phylum: Echinodermata
Class: Holothuroidea
Order: Aspidochirotida
Family: Curculionoidea
Genus: Parastichopus
Genus: Parastichopus
Specific Name: californicus
Blue Sea Star
Kingdom: Animalia
Phylum: Echinodermata
Class: Asteroidea
Order: Not Listed
Family: Not Listed
Genus: Phataria
Genus: Phataria
Specific Name: unifascialis
(http://rlv.zcache.com/pair_of_giant_red_sea_urchins_fine_art_prints-p228374452788696333trma_400.jpg)
Giant Red Sea Urchin
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Order: Echinoida
Family: Curculionoidea
Genus:Strongylocentrotus
Genus:Strongylocentrotus
Specific Name: franciscanus
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