Download presentation
Presentation is loading. Please wait.
Published byChristine Parks Modified over 9 years ago
1
Vertebrates Linnea Kirby, Michelle Duffy, and Adrienne Vergith-Hill
2
Vertebrate Evolution
3
Chordates notochord dorsal hollow nerve cord muscular post-anal tail pharyngeal slits or clefts deuterostomes
4
Craniates neural crest genetically complex pharyngeal clefts
5
What is a vertebrate? internal bony skeleton sub phylum of Chordata notochord evolved into spinal cord
6
Lampreys Oldest living lineage of vertebrates Live in marine and freshwater environments Parasitic to fish
7
Fish 3 Types o chondrichthyes first lineage gnathostomes cartilaginous must constantly swim in order to survive o ray-finned fish first lineage of osteichthyans operculum (gill cover) swim bladder 2-chambered hearts o lobe-finned fish possibly predecessors of tetrapods
8
Amphibians first lineage of tetrapods amphibians means "two lives" found in damp habitats 3-chambered heart x
9
Amniotes have an amniotic egg amniotic egg has extraembryoic membranes o function in gas exchange o waste storage o transfer of stored nutrients to embryo o 4 membranes allantois amnion chorion yolk sac
10
Reptiles first lineage of amniotes have scales o needs to use its lungs for air exchange o waterproof barrier to prevent dehydration ectothermic 3-chambered heart
11
Reptiles cont. — Birds endothermic hollow bones o help with flight flight feathers - made out of same protein as scales 4-chambered heart
12
Mammals amniotes that have hair and produce milk 4-chambered heart 3 subgroups o monotremes lay eggs only found in Australia and New Guinea don't have nipples o marsupials higher metabolic rate pouch o eutherians (placental mammals) longer period of pregnancy embryonic development in uterus
13
Humans bipedal hominoid with a large brain different than hominids
14
"Baby Kangaroo - Cute Kangaroo Pictures." Crazy Videos, Funny Videos, Funny Pictures, Flash Games, Guzer.com. Web. 28 Nov. 2011.. "Blue Poison Dart Frog." National Aquarium, Baltimore | Home. Web. 28 Nov. 2011.. Campbell, Neil A. Biology. [S.l.]: Benjamin-Cummings, 2005. Print. "Chimpanzee and Tiger - Best Friends | FunTim." FunTim Fun Images and Cool Photos. Web. 28 Nov. 2011.. "Chordate." Virtual Microscope Home Page. Web. 28 Nov. 2011.. "Dartfrogforums.com - Dart Frog Forums." Tech Blog. Web. 28 Nov. 2011.. "Echidna Spikes Poll as Cutest Aussie Animal." The Lab AU | VetShopAustralia.com.au Blog. Web. 28 Nov. 2011.. NOAA Coral Reef Information System (CoRIS) Home Page. US Department of Commerce. Web. 28 Nov. 2011.. "NOAA Ocean Explorer: Pacific Hagfish." NOAA, Ocean Explorer. Web. 28 Nov. 2011.. "Oops: Cell Shows Up a Billion Years Early | Bob Enyart Live." Home | Bob Enyart Live. Web. 28 Nov. 2011.. "Phyla Class Animal Diversity." Quia. Web. 28 Nov. 2011.. "Reptiles: Animals with Scales." Kidport Home Page. Web. 28 Nov. 2011.. "Shark Behind Scuba Divers Photo Hoax." Latest Email Hoaxes - Current Internet Scams - Hoax-Slayer. Web. 28 Nov. 2011.. "Stephanie Lisa Tara's Blog." Social Moms: the Influential Moms Network. Web. 28 Nov. 2011.. Picture Citations
15
The End
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.