1) Bird
Found on
https://www.crosswordclues.com/clue/protoavis
Protoavis (meaning `first bird`) is a problematic taxon of archosaurian known from fragmentary remains from Late Triassic Norian stage deposits near Post, Texas. Much controversy remains over the animal, and there are many different interpretations of what Protoavis actually is. When it was first described, the fossils were described as being fr.....
Found on
http://en.wikipedia.org/wiki/Protoavis
Protoavis meaning first bird) is an extinct diapsid from the late Triassic period (80 million years earlier than Archaeopteryx ). Its partly toothless jaw and keel-like breast bone were like those of birds. It also had a tail, dinosaur-like rear legs, and hollow bones. There is some dispute about whether this animal was a bird (which would make it ...
Found on
http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
[
n] - most primitive avian type known
Found on
http://www.webdictionary.co.uk/definition.php?query=protoavis
noun most primitive avian type known; extinct bird of the Triassic having birdlike jaw and hollow limbs and breastbone with dinosaur-like tail and hind limbs
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https://www.encyclo.co.uk/local/20974
a fossil bird of the genus Protoavis, from the Triassic Period, having a birdlike, partly toothless jaw structure, a tail and hind legs resembling those of the dinosaur, and the hollow bones and keellike breast that are characteristic of modern birds: the oldest known avian type, preceding the archaeopteryx by an estimated 75 million years.
Found on
https://www.infoplease.com/dictionary/protoavis
No exact match found.
