Assertion: arthropod's pair | /r/HasProperty | single flap-like appendage
Facets:
Source sentences:
text: Yohoia was a tiny animal (7 mm to 23 mm long) with: a head shield; a slim, segmented body covered on top by armor plates; a paddle-like tail; 3 pairs of legs under the head shield; a single flap-like appendage fringed with setae under each body segment, probably used for swimming and/or respiration; a pair of relatively large appendages at the front of the head shield, each with a pronounced "elbow" and ending in four long spines which may have functioned as "fingers".