skeletal muscle organ, vertebrate caudalipuboischiotibialis Muscle that is associated with tail flexion. Orginates on one of the first post sacral vertebrae posteriorly and inserts on the posterior edge of the m.puboischiotibialis. (modified from Duellman and Trueb 1994). To Do: add attachment site terms to ext UBERON:4200031 T Alexander Dececchi