OBO_REL:part_of (UNDECLARED) basal fulcrum caudal basal fulcrum Basal fulcrum that precedes a caudal fin lobe. Arratia, G. 2009. Identifying patterns of diversity of the actinopterygian fulcra. Acta Zoologica (Stockholm) 90 (Suppl. 1): 220-235. Caudal basal fulcra precede the bases of both lobes of the caudal fin or only the dorsal one in basal teleosts. Most teleosts lack basal fulcra on the caudal fin. For additional information on basal fulcra see Arratia (2008, 2009). TAO:0002159 caudal basal fulcra teleost_anatomy caudal fin skeleton