Definitions
from The Century Dictionary.
- Same as
plesiomorphous .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective cladistics Sharing a character state with an ancestral clade;
primitive .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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So cladistics is a reductive method, stripping a defined set of taxa, that have for sure one trait in common, of all distinguishing, autapomorphic traits to arrive at sets of plesiomorphic traits that are common to all taxa in the monophylitic clade.
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You will get larger subsets of traits that contain all plesiomorphic traits plus synapomorphic traits that form grouping of larger subsets of taxa in the clade.
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Interbreeding is plesiomorphic; not interbreeding is apomorphic.
(UPDATED) Another half-brained science headline - The Panda's Thumb 2009
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And the pineal eye "third eye" is plesiomorphic for amniotes.
Life's Time Capsule: The Synapsid Gallery ART Evolved 2009
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Nimbacinus dicksoni, a plesiomorphic thylacine (Marsupialia: Thylacinidae) from Tertiary deposits of Queensland and the Norhtern Territory.
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Incipient parental care in Discus - A plesiomorphic state of a truly endodontid character?
Egg brooding in land snails AYDIN 2008
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Incipient parental care in Discus - A plesiomorphic state of a truly endodontid character?
Archive 2008-02-01 AYDIN 2008
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The authors suggest that what they observed may be the ancestral plesiomorphic state of a character that evolved further in the Pacific endodontids.
Archive 2008-02-01 AYDIN 2008
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The authors suggest that what they observed may be the ancestral plesiomorphic state of a character that evolved further in the Pacific endodontids.
Egg brooding in land snails AYDIN 2008
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Something can remain unchanged, in which case it remains underived (plesiomorphic), or it can change, in which case it is derived (apomorphic).
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