II' Animal Diversity

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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla a. Phylum Trilobita -
jointed appendages on every segment -
dominated in Paleozoic (600 250 mya)
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla b. Phylum Chelicerata 1.
Diversity Eurypterids (Sea
Scorpions)
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla b. Phylum Chelicerata 1.
Diversity Eurypertids Horseshoe
Crabs
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla b. Phylum Chelicerata 1.
Diversity Scorpions Arachnids
Spiders Mites Ticks
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla b. Phylum Chelicerata 2.
Biology - first terrestrial animals 450
mya (scorpion-like)
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla b. Phylum Chelicerata 2.
Biology - first terrestrial animals 450
mya - two body segments cephalothorax
(fusion) abdomen
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla b. Phylum Chelicerata 2.
Biology - first terrestrial animals 450
mya - two body segments cephalothorax
(fusion) abdomen - Fusion of abdominal
segments
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla b. Phylum Chelicerata 2.
Biology - first terrestrial animals 450
mya - two body segments cephalothorax
(fusion) abdomen - Fusion of abdominal
segments - Gills or book lungs
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla c. Phylum Myriapoda 1.
Diversity Pauropods
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla c. Phylum Myriapoda 1.
Diversity Pauropods Centipedes
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla c. Phylum Myriapoda 1.
Diversity Pauropods Centipedes Millipedes
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla c. Phylum Myriapoda 2.
Biology - spiracles for breathing
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla d. Phylum Crustacea 1.
Diversity Remipede
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla d. Phylum Crustacea 1.
Diversity Decapods (Shrimp, Loster, Crabs)
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla d. Phylum Crustacea 1.
Diversity Decapods (Shrimp, Loster,
Crabs) Copepods Barnacles
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla d. Phylum Crustacea 2.
Biology - three body regions - appendages
modified for different functions head for senses
(antennae) and feeding thorax for locomotion
abdomen for reproduction.
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- appendages modified for different
functions head for senses (antennae) and
feeding thorax for locomotion abdomen for
reproduction.
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla e. Phylum Hexapoda 1.
Diversity - Collembola
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla e. Phylum Hexapoda 1.
Diversity - Collembola - Protura
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla e. Phylum Hexapoda 1.
Diversity - Collembola - Protura -
Insecta
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla e. Phylum Hexapoda 2.
Biology - spiracles
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla e. Phylum Hexapoda 2.
Biology - spiracles - Fusion of segments
into three regions head, thorax, abdomen
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla e. Phylum Hexapoda 2.
Biology - spiracles - Fusion of segments
into three regions head, thorax,
abdomen - Flight in insects
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II. Animal Diversity b. Ecdysozoans 3.
Arthropod Phyla e. Phylum Hexapoda 3. Why
are there SO MANY insect species?? - flight
high powers of dispersal - small so they are
unlikely to get back to the same place the
left. - tough exoskeleton resists
desiccation - fecund have lots of offspring
increase probability of geographical isolation
increase probability of establishing a population
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II. Animal Diversity C. Bilateria 1.
Protostomes blastopore forms mouth a.
Lophotrochozoans b. Ecdysozoans 2.
Deuterostomes blastopore forms anus a.
Echinodermata b. Hemichordata c. Chordata
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus a.
Echinodermata 1. Diversity - sea stars
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus a.
Echinodermata 1. Diversity - sea
stars - sea cucumbers
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus a.
Echinodermata 1. Diversity - sea
stars - sea cucumbers - sea urchins
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus a.
Echinodermata 2. Biology - biradial
symmetry
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus a.
Echinodermata 2. Biology - biradial
symmetry - internal skeleton calcified
plates
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus a.
Echinodermata 2. Biology - biradial
symmetry - internal skeleton calcified
plates - filter feeders (Sea Lily),
herbivores (sea urchins), predators (sea
stars).
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus b.
Hemichordata Acorn Worms
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus b.
Hemichordata Acorn Worms - pharyngeal gill
slits - hollow dorsal nerve tube
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters - Pharyngeal
Gill Slits
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters - Pharyngeal
Gill Slits - Hollow Dorsal Nerve Tube
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters - Pharyngeal
Gill Slits - Hollow Dorsal Nerve Tube -
Post-anal tail
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters - Pharyngeal
Gill Slits - Hollow Dorsal Nerve Tube -
Post-anal tail - notochord a rigid
supporting rod
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters 1. Urochordata -
Tunicates
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters 1. Urochordata
Tunicates - 4 traits as larva
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters 1. Urochordata
Tunicates - 4 traits as larva -
mobile as larva
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters 1. Urochordata
Tunicates - 4 traits as larva -
mobile as larva - become sedentary
as adults (filter)
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters 2.
Cephalochordata Lancelets
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata Four Key Characters 2.
Cephalochordata Lancelets - 4 traits
- burrowers - filter feeders
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata 3. Vertebrata
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata 3. Vertebrata - four traits
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata 3. Vertebrata - four
traits - vertebral column
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata 3. Vertebrata - four
traits - vertebral column -
trends
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata 3. Vertebrata - four
traits - vertebral column -
trends - increased locomotion

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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata 3. Vertebrata - four
traits - vertebral column -
trends - increased locomotion
- increased cephalization
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II. Animal Diversity C. Bilateria 2.
Deuterostomes blastopore forms anus c.
Chordata 3. Vertebrata - four
traits - vertebral column -
trends - increased locomotion
- increased cephalization - adaptations
to land
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II. Animal Diversity 3. Vertebrata a. Origin
of Vertebrates - filter feeding ancestor
(lancelet-like) - 550 mya - Pikaea
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II. Animal Diversity 3. Vertebrata a. Origin
of Vertebrates
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II. Animal Diversity 3. Vertebrata b.
Jawless Fishes (Class Agnatha) - Early
Ostracoderms filter feeding
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II. Animal Diversity 3. Vertebrata b.
Jawless Fishes (Class Agnatha) - Current
lampreys, hagfishes parasitic
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes - gill arches
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes - gill arches - evolved to
jaws
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes - gill arches - evolved to
jaws - increase feeding
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes - gill arches - evolved to
jaws - increase feeding - priority on
locomotion
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes - gill arches - evolved to
jaws - increase feeding - priority on
locomotion - Cephalization
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes - Placoderms (extinct survived to
Permian) dominant predators paired
appendages for swimming
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes - Placoderms (extinct survived to
Permian) - Cartilaginous fish (Class
Chondrichthyes) also efficient paired
fins - sharks - skates, rays -
ratfish
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II. Animal Diversity 3. Vertebrata c. Jawed
Fishes - Placoderms (extinct survived to
Permian) - Cartilaginous fish (Class
Chondrichthyes) - Bony Fish (Class
Osteichthyes)