Topics: Carboniferous Radiation, Caecilians, Gymnophiona, Salamander, Caudata, Amphibian, Paedomorphosis, Frog Life Cycle, frog, Tadpole, Fish

Topics: cellular metabolism, cell, genetic, development, taxonomy, phylogeny, unicellular eukaryotes, sponge, placozoan, cridarian, ctenophore, acoelomorpha, platyzoa, mesozoa, polyzoa, kryptrochozoa, mollusc, annelid, allied taxa, ecdysozoans, trilobites, chelicerates, myriapod, crustacean, hexapod, chaetognath, echinoderm, hemichordate, chordate, fish, tetrapod, amphibian, aminote, nonavian reptile, bird, mammal, support, protection, movement, homeostasis, digestion, nutrition, nervous coordination, nervous system, nervous coordination, sense organ, chemical coordination, immunity, animal behavior, animal distribution, animal ecology

Topics: chordate, hemichordata, rattus rattus, mammal, bird, aves, amphibian, fish

Topics: Chordate, Vertebrate evolution, Fish, Amphibian, Reptile, Bird, Mammal

Topics: gill, lung, Ventilatory Mechanism, Muscular Mechanism, Water-Breathing Fish, Air-breathing Fish, Amphibian

Topics: hematology, human experiments, amphibian experiments, mammalian experiments

Topics: cell, virus, monra, protista, fungi, plantae, thallophyta, bryophyta, pteridophyta, spermophyta, lower invertebrates, higher invertebrate, Pisces, amphibians, reptiles, birds, mammals, nutrition, food substances, digestive system, digestive enzyme, dentition, supporting tissues, musculoskeletal system, movement, transport, circulatory system, excretion, excretory products, respiration, reproduction, flowering plants, germination, fruit dispersal, seed dispersal, growth, development, homeostasis, endocrine system, plant hormones, nervous system, agriculture, soil science, diseases, insect vectors, ecological management, ecological succession, adaptation, feeding relationship, heredity, variation, evolution