part of part of basal fulcrum caudal basal fulcrum This class was sourced from an external ontology (teleost_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon 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. UBERON:2002159 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). caudal basal fulcra caudal fin skeleton