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°Reptilia: Reptiles (~300)Breath through lungs Scaly skin Ectothermic Thermoregulation °Reproduction Ovoviviparous: laying an egg inside of body and then hatches and then born. oNo nourishment or direct energetic connection between offspring and parentOviparous: some energetic connection/nourishment that occurs beforeoproducing young by means of eggs that are hatched after they have been laid by the parentviviparous (viviparity evolved ~100x)sexual and asexual oEx: gecko reproduced asexually°°Reptiles Testudine: turtles (~330)o7 sp of sea turtles o69% are threaten oSlow growth, late maturity, long-livedoAll turtles lay eggs (oviparous)
oOnly tetrapod with shell that encloses both pectoraland pelvicgirdle oInternal fertilizationoReduced bony elements in some sppLeatherbackSoft shelloEvolutionOldest turtle ~240 mil Great predatorial defense but a lot of costT shape cross section ribs Suit of armorLater turtles developed fused ribs Dermal bonesUpper shell (carapace)Lower shell (plastron) Theory of shell: sequential increase in cross sections of ribso2 types of turtles pleurodiraside neck cryptodira (majority) hidden neck oCA turtles
Cheloniidae (4)Sea turtles Lungs used for respiration and buoyancyTear glands shed excess Na and K saltsOsmotic homeostasis (costly) All sea turtles in US listed as endangered speciesEmydidae (2)Invasive pond turtles Pets that were let go and became this invasive speciesoRed eared slideromnivoreschill at the bottom of pools or mud Testudinidae (1)Tortoise Long-lived / the oldest terrestrialSpend most of life in burrows