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Taxonomy: The Science of Biological Classification and Naming In the vast diversity of life on Earth, scientists require a standardized method to organize, name, and identify organisms. T...
Read Taxonomy: The Science of Biological Classification and NamingWastebasket Taxa: The Catch-All Categories of Biological Classification In the complex world of biological classification, scientists strive to group organisms based on their actual evolu...
Read Wastebasket Taxa: The Catch-All Categories of Biological ClassificationApomorphy and Synapomorphy in Phylogenetic Analysis In the study of evolutionary relationships, scientists use specific terminology to describe how traits change over time. At the heart o...
Read Apomorphy and Synapomorphy in Phylogenetic AnalysisHomology in Biology: Shared Ancestry and Evolutionary Design In the study of life, homology refers to the similarity in anatomical structures or genes between organisms of different taxa ...
Read Homology in Biology: Shared Ancestry and Evolutionary DesignPlesiomorphy and Symplesiomorphy in Phylogenetic Analysis In the study of phylogenetics—the analysis of evolutionary relationships among biological species—scientists must distinguish bet...
Read Plesiomorphy and Symplesiomorphy in Phylogenetic AnalysisCrown Groups and Stem Groups in Phylogenetics In the study of phylogenetics—the science of evolutionary relationships—scientists need precise ways to categorize organisms. One of the most...
Read Crown Groups and Stem Groups in PhylogeneticsJacques Armand Gauthier and the Revolution of Dinosaur Phylogenetics Jacques Armand Gauthier is a distinguished American vertebrate paleontologist, comparative morphologist, and systemati...
Read Jacques Armand Gauthier and the Revolution of Dinosaur PhylogeneticsPhylogenetic Nomenclature: Redefining Biological Classification In the quest to map the history of life on Earth, biologists have long struggled with how to name the groups they discover....
Read Phylogenetic Nomenclature: Redefining Biological ClassificationTaxonomy: The Science of Biological Classification and Naming In the vast diversity of life on Earth, scientists require a standardized method to organize and identify millions of differe...
Read Taxonomy: The Science of Biological Classification and NamingArchosaurs: The Evolutionary History of the Ruling Lizards The term Archosaurs, derived from the Ancient Greek words archi- (ruling) and sauros (lizard), describes a dominant group of rep...
Read Archosaurs: The Evolutionary History of the Ruling LizardsNeontology: The Study of Living Organisms and Extant Taxa While many people are familiar with paleontology and the study of ancient fossils, there is a complementary field of biology know...
Read Neontology: The Study of Living Organisms and Extant TaxaSauropsids: The Evolutionary Lineage of Reptiles and Birds The Sauropsida, a term meaning "lizard faces," represents a vast and diverse clade of amniotes—vertebrates that lay eggs on land...
Read Sauropsids: The Evolutionary Lineage of Reptiles and BirdsTetrapods: The Evolutionary Journey from Water to Land The transition from aquatic life to terrestrial existence is one of the most significant events in the history of vertebrate evoluti...
Read Tetrapods: The Evolutionary Journey from Water to LandApomorphy and Synapomorphy in Phylogenetic Analysis In the study of evolutionary relationships, scientists use specific terminology to describe how traits change over millions of years. A...
Read Apomorphy and Synapomorphy in Phylogenetic AnalysisEcdysozoa: The Evolutionary History of Molting Animals In the vast tree of animal life, few groups are as diverse and successful as the Ecdysozoa. This massive clade of protostome animals...
Read Ecdysozoa: The Evolutionary History of Molting AnimalsNeontology: The Study of Living Organisms and Extant Taxa While many people are familiar with paleontology—the study of ancient fossils—there is a complementary field of biology known as ...
Read Neontology: The Study of Living Organisms and Extant TaxaPhenetics: Classifying Organisms Through Overall Similarity In the vast field of biology, scientists employ various systems to organize the diversity of life. One such approach is pheneti...
Read Phenetics: Classifying Organisms Through Overall SimilarityNumerical Taxonomy: The Science of Quantitative Biological Classification In the field of biological systematics, the challenge of organizing the vast diversity of life requires rigorous ...
Read Numerical Taxonomy: The Science of Quantitative Biological Classification