subclass crossopterygii Antonyms
No Synonyms and anytonyms found
Meaning of subclass crossopterygii
Wordnet
subclass crossopterygii (n)
fishes having paired fins resembling limbs and regarded as ancestral to amphibians
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fishes having paired fins resembling limbs and regarded as ancestral to amphibians
No synonyms found.
No antonyms found.
The subclass Crossopterygii is an extinct group of fish that possessed both ray-fins and lobed fins.
Crossopterygians are believed to be the ancestors of amphibians, the first vertebrates to live on land.
The earliest known crossopterygians date back to the Devonian period, approximately 360 million years ago.
Crossopterygians had a unique combination of features, including jointed fins, a bony skeleton, and a distinctive tooth pattern.