graptolite

Noun

Meaning

One of numerous species of slender and delicate fossils, of the genus Graptolites and allied genera, found in the Silurian rocks. They belong to an extinct group (Graptolithina) supposed to be hydroids.

Source: Webster's dictionary

Synonyms

graptolitic acorn worms pterobranchia acorn worm enteropneust enteropneusta pterobranch acorn-worm-like enteropneustan pterobranchian pterobranchiate graptolitoid hemichordata graptoliticus

Close letter words and terms

grapsid grapsoid Graptemys barbouri graptolitic Graptophyllum Graptophyllum pictum