UALVP 59606, metatarsal IV of Citipes elegans. Left metatarsal IV and fused distal tarsal IV of UALVP 59606 in anterior (A), lateral (B), posterior (C), medial (D), proximal (E) and distal (F) views. Red line indicates plane of section in Figure 15. Abbreviations: cond, condyle; dt IV, distal tarsal IV; lclf, lateral collateral ligament fossa; lp, lateral process; mclf, medial collateral ligament fossa; mt II, contact for metatarsal II; mt III, contact for metatarsal III; mt V, contact for metatarsal V; mt IV, metatarsal IV; m.tc, attachment for m. tibialis cranialis; pdp, proximodorsal process; plr, posterolateral ridge; pprt, posterior protuberance.