Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
alvarezsauroid .
Etymologies
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Examples
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"When the alvarezsauroids were initially discovered only about 15 years ago the prevailing hypothesis was that they were birds - a lineage within birds that had lost flight ability," Choiniere told LiveScience.
Livescience.com 2010
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So its features were in between those of more advanced alvarezsauroids and primitive ones.
Livescience.com 2010
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The advanced alvarezsauroids had a single claw on the hand that was at least twice as long and four to five times as wide as its other claws.
Livescience.com 2010
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Many insisted the later alvarezsauroids, which were smaller than Haplocheirus, were actually flightless birds.
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Haplocheirus, which lived 160 million years ago, is the oldest known member of an oddball group of bird-like dinosaurs called alvarezsauroids.
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