Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of a group of chiefly extinct reptiles that first emerged in the early Permian Period and are characterized by a skull with no openings in the temporal region. Modern turtles and tortoises may be surviving members of this group, or they may be descendants of diapsids that lost their skull openings.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun biology Any
amniote whoseskull does not haveopenings near thetemples .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun primitive reptile having no opening in the temporal region of the skull; all extinct except turtles
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Mesasaurs were small crocodilian-like anapsid reptiles of about 300 million years ago.
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This is where Lenny caustically suggested that I was a YEC for not knowing that turtles had been reclassified as diapsids with a secondarily anapsid appearing skull I hope that embryologically turtle skulls start off as diapsid and then change but I dont really know.
Drawing a Line in the Academic Sand - The Panda's Thumb 2005
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It doesnt seem likely that anapsid skulls are all secondarily derved from diapsids.
Report on the 2005 Creation Mega Conference, Part Four - The Panda's Thumb 2005
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Turtles were considered to be living anapsids although there was a significant temporal gap between the last anapsid reptile fossil and the first turtle fossil.
Drawing a Line in the Academic Sand - The Panda's Thumb 2005
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It doesnt seem likely that anapsid skulls are all secondarily derved from diapsids.
Report on the 2005 Creation Mega Conference, Part Four - The Panda's Thumb 2005
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There are indications that they are only secondarily anapsid.
Drawing a Line in the Academic Sand - The Panda's Thumb 2005
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Rental cars charlotte awhile for the swarthiness the apprehension of any azalea he has apraxic in a unmalleability or negligence anapsid, we are rectilineal at, bitingly, an nutrient huckster.
Rational Review 2009
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regardless; to continue with the idea that the basal reptile skull structure was initially felt to be anapsid and similar to that of lobe finned fishes and amphibians.
Report on the 2005 Creation Mega Conference, Part Four - The Panda's Thumb 2005
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I think i’ve got this now: basal anapsid reptiles (which presumably gave rise to synapsid and sauropsid lineages) died out leaving no descendants. turtles, full diapsid reptiles closely allied to crocodiles, secondarily developed a seemingly (but not osteogenically identical) anapsid skull structure subsequently.
Report on the 2005 Creation Mega Conference, Part Four - The Panda's Thumb 2005
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