Myllokunmingia

The myllokunmingia is a standalone fossil that can be donated to the museum in.

Real-world information
Myllokunmingia is one of the earliest chordates found. It lived in what is now southern China from 535 to 520 million years ago. Only one specimen is known, measuring 28 mm long and 6 mm high. It is hypothesized to be a vertebrate, although this has not been firmly established.