A skeletal element that has the potential to participate in endochondral ossification, and may participate in intramembranous ossification. [ http://purl.obolibrary.org/obo/go/references/0000034 http://dx.plos.org/10.1371/journal.pone.0051070 VSAO:0000139 PSPUB:0000170 ]
Synonyms: endochondral replacement element