单词 | synapsid |
释义 | Example sentences from the Web for synapsid
synapsid[ sĭ-năp′sĭd ] Any of various amniotes with one temporal opening on each side of the skull. Synapsids emerged in the late Permian Period and were characterized by carrying their limbs under their body and developing front teeth that were different from their back teeth. One group of synapsids, the therapsids, gave rise to the mammals. Compare anapsid diapsid therapsid. Words nearby synapsidsynagogue, synalepha, synalgia, synaloepha, synapse, synapsid, synapsis, synapte, synaptic, synaptic cleft, synaptic conduction The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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