OBO_REL:part_of (UNDECLARED) postcleithrum Commonly, the postcleithra form a bilateral series including one to three flat, thin postcleithra of variable shapes (in teleosts). Basal teleosts may have a series up to seven postcleithra (see Arratia 1984 and 1997 and references herein). Dermal bone placed postero-medially to the supracleithrum and/or cleithrum. TAO:0000410 métacleithrum (French) métaclithrum (French) paraclithrum (French) postclavicle postcleithra postcleithrum (French) teleost_anatomy dermal bone pectoral girdle skeleton