part of part of otic capsule zone of bone organ opisthotic AAO:0010835 UBERON:0010910 Posterior ossification of the otic capsule. see TAO:0000474 - intercalar "Small membrane bone homologous with a cartilage bone in more basal fishes (Patterson, 1977). Situated between the exoccipital and the pterotic at point of attachment of short ligament that originates on the ventral arm of the posttemporal." teleost fishes have a bone which is called the opisthotic. However, it is not homologous to the tetrapod opisthotic and the teleost otic capsule is all of a piece