from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The science of systematic classification.
- n. A system of classification, as biosystematics.
- n. Biology The systematic classification of organisms and the evolutionary relationships among them; taxonomy.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The science of systematic classification, especially of organisms. Depending on context this may be the same as taxonomy or distinct. In the latter case systematics will be taken to mean the research into the relationships of organisms, while taxonomy will involve itself in the recognition and the naming of taxa.
from The Century Dictionary and Cyclopedia
- n. The principles and practice of classification; the study of system, or the formation of any system; systematology; taxonomy. See system, 11.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the science of systematic classification
Sorry, no etymologies found.
The use of hierarchies as organizational models in systematics
Cladistics, or phylogenetic systematics, is a system of classifying living and extinct organisms based on evolutionary ancestry as determined by grouping taxa according to "derived characters," that is characteristics or features shared uniquely by the taxa and their common ancestor.
If dinosaurs really do get lumped more than they already are, it strikes me that the trend within dinosaur systematics is in direct opposition to that occurring among extant tetrapods.
I direct your attention to Figures 4-6 (page 12) where he tries to clear up some conceptual issues with Hennig’s set-theoretical approach to using hierarchies in systematics:
Snail shells are important for use in systematics, that is deciding who is more closely related to whom.
The science of figuring out these trees, known as systematics, has progressed significantly in the last two decades largely due to advances in computation, genetics and molecular biology.
Oh, I've also slowly been making my way through the new (September) issue of the Journal of Vertebrate Paleontology, and have read, over the past few days, "A new ornithischian dinosaur from the Lower Cretaceous Kuwajima Formation of Japan," "The anatomy and systematics of Colepiocephale lambei [Dinosauria: Pachychephalosauridae]," and "Rapid somatic expansion causes the brain to lag behind: the case of the brain and behavior of New Zealand's Haast's Eagle [Harpagornis moorei]."
Cladistics (ancient Greek: κλάδος, klados, "branch") is a form of biological systematics that classifies species of organisms into hierarchical monophyletic groups.
Common traits and shared genetics are tools that help biologists build the clade systematics.
In biological systematics, a clade (from ancient Greek κλάδος, klados, "branch") signifies a single "branch" on the "Tree of life", a group composed of a single ancestor and all its descendants.
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