MarsupialiaMacropodidaeOpossumsMonodelphisMonotremataPlatypusPhylogenyTrichosurusEchidnaPotoroidaeMolecular Sequence DataRNA, Ribosomal, 16SDNA, RibosomalMammalsPhascolarctidaeSpecies SpecificityBiological EvolutionSequence Analysis, DNAEvolution, MolecularDentitionDNA, BacterialBase CompositionGenes, rRNAFossilsBase SequenceRodentiaThermal ConductivityPaleodontologyX Chromosome InactivationSequence AlignmentAustraliaBacterial Typing TechniquesInsectivoraPhysiology, ComparativeExtinction, BiologicalSkullAmino Acid SequenceMicrospectrophotometryX ChromosomeActinomycetalesSequence Homology, Nucleic AcidTasmaniaSex ChromosomesShort Interspersed Nucleotide ElementsQueenslandForelimbChromosome PaintingFatty AcidsSex DifferentiationSperm TransportPaleontologySouth AmericaXenarthraVertebratesMitochondrial SizeGenomeRNA, BacterialGenomic ImprintingPlacentationReptilesTreesGenetic VariationSequence HomologyChromosomes, MammalianRNA, Transfer, AspDNA, Ribosomal SpacerSeawaterDosage Compensation, GeneticBasal MetabolismUrogenital SystemCluster AnalysisToothNucleic Acid HybridizationTestisSkeletonSequence Homology, Amino AcidYolk SacY ChromosomePolymerase Chain ReactionGeographyGeologic SedimentsSyntenyMicroscopy, ElectronGenes, X-LinkedAnthropology, PhysicalPlacentaReproductionEcosystemHistory, AncientAnimals, ZooConserved SequenceGonadsWestern AustraliaSolar EnergyPregnancy, AnimalBiodiversityRetroelementsSpermatozoaAnuraPregnancy