Tully monster

Meanings

1. A soft-bodied bilaterian animal, notable for its dubious taxonomic status, †Tullimonstrum gregarium, which lived in shallow tropical coastal waters of muddy estuaries during the Pennsylvanian geological period, about 300 million years ago. This animal has an odd appearance, having a mostly cigar-shaped body, with a triangular tail fin, two long stalked eyes, and a proboscis tipped with a mouth-like appendage.

1. Alternative letter-case form of Tully monster.

Etymology

Named after amateur collector Francis Tully, who found the first of these fossils in 1955.