Amphibians Kingdom: Animalia Phylum: Chordata Order: Anura Family: Ranidae Genus: Rana Species: pipiens

Vertebrate classes: Agnatha Chondrichthyes Osteichthyes Amphibians 530 mya Agnatha Chondrichthyes Osteichthyes Amphibians Reptiles Aves Mammals

Amphibians Lobe-finned fish gave rise to early amphibian Coelacanth

Amphibian Characteristics Ectothermsic– Cold Blooded Three-chambered Heart Porous, thin, slimy skin Must return to water to breed – external fertilization Live both in water and on land (amphibious)

3 methods to take in Oxygen 1. Lungs 2. Gills 3. Cutaneous Respiration – through their skin

Order Urodela (Salamanders) – “tailed ones” Mexican axolotl Tiger Salamander Giant Salamander Pacific Giant Salamander Red Spotted Newt

Order Caecilians - “legless ones” Costa Rican - Gymnopis multiplicata Purple Caecilian

Order Anura - “Tailless one’s” The Harlequin Frog Bullfrog Wallace’s Flying Frog Golden Poison Dart Frog Red-Eyed Tree Frog Cane Toad Strawberry Poison Dart Frogs

Leopard Frog - Dissection Kindgom: Animalia Phylum: Chordata Class: Amphibia Order: Anura Family: Ranidae Genus: Rana Species: pipiens Frog Sound

Frog CHART Organ/ Structure System Function Countershading Nictitating membrane Tympanic membrane Tongue Gullet Glottis Eustachian tube Maxillary teeth Vomerine teeth Fat bodies Liver Heart Lungs Gall bladder Stomach Small intestine Mesentary Large intestine / Cloaca Spleen Esophagus Kidneys Testes Sperm duct Ovaries Oviduct Bladder

Structures Nictitating membrane Tympanic membrane

Structures: Tongue Gullet Glottis Eustachian tube Maxillary teeth Vomerine teeth

Structures Fat bodies Liver Heart Lungs Gall bladder

Structures Stomach Small intestine Mesentary Large intestine/ Cloaca Spleen Esophagus

Frog Review