1. The Evolutionary Journey of Crayfish and CockroachBy
Michael Smith
and
Fawn O’Brien

2. Interesting Crayfish Characteristics
Chelipeds – big pinchers for defense
Maxillipeds – 3 sets of feeding claws
Swimmerets – assist in swimming and females use them to carry eggs under their body

3. Interesting Crayfish Characteristics
Ability to molt
Ability to regenerate – regrow limbs
Eye stalks – eyes can swivel on stalks

5. Cockroach & Crayfish Family Tree
How
Water Flea
Crayfish
Cockroach
Brine Shrimp
Shrimp
Grasshopper
Butterfly
Fly
Makes larvae
Decapods--10 walking legs
Silverfish
Crustacea-crusty shell maxilipeds, Chilipeds, swimmerets
Cockroach & Crayfish Family Tree
Centipedes
Hexapoda--6 legs
compound eyes
Spiders
Land
Arthropods-jointed legs
Aquatic

6. Crayfish
Cockroach
Human
Paramecium
Bean
Where do we fit?