part of part of pectoral fin pectoral fin skeleton bone of pectoral complex lepidotrichium pectoral fin lepidotrichium pectoral fin ray pectoral fin lepidotrichia Each pectoral lepidotrichium may be unsegmented (e.g., spine), segmented but unbranched (e.g., leading ray) or segmented and branched. Definition of lepidotrichium by Schultze and Arratia (1989: 217). For additional information about lepidotrichia see Arratia et al. 2001 and Arratia 2008. ZFA:0001551 Lepidotrichium that is part of the pectoral fin skeleton. UBERON:4000175 This class was sourced from an external ontology (vertebrate_skeletal_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon paired fin lepidotrichium