Final answer:
There are more fossil forms than living forms of echinoderms, which is true, given the vast number of species that have existed throughout earth's history.
Step-by-step explanation:
The statement 'There are more fossil forms than there are living forms of echinoderms' is True. The phylum Echinodermata, which includes organisms such as sea stars, sand dollars, and feather stars, has a rich fossil record. Echinoderms have been present on Earth for hundreds of millions of years, and many species that once existed are now extinct. Today, there are approximately 6000 living species of echinoderms. Since echinoderms have been abundant in the oceans for such a long time, the number of extinct fossil forms is indeed greater than the number of extant species.