Files in this Data Supplement:

• Movie 1 -

  Movie 1. Video of pharyngeal behaviors in the Rhabditidae family (Caenorhabditis elegans N2). In the Rhabditidae family, pumping occurred in the corpus, anterior isthmus, and TB, whereas peristalsis occurred in the posterior isthmus. Corpus, anterior isthmus, and TB pumping were coupled.

• Movie 2 -

  Movie 2. Video of pharyngeal behaviors in the Diplogasteridae family (Pristionchus pacificus PS312). In the Diplogasteridae family, pumping occurred only in the corpus, whereas peristalsis occurred in the isthmus and TB.  Isthmus and TB were coupled to conduct peristalsis.

• Movie 3 -

  Movie 3. Video of pharyngeal behaviors in the Cephalobidae family (Cephalobus sp. DWF 1301). In the Cephalobidae family, pumping occurred in the corpus and terminal bulb, whereas peristalsis occurred in the entire isthmus. Isthmus peristalsis and TB pumping were coupled.

• Movie 4 -

  Movie 4. Video of pharyngeal behaviors in the Panagrolaimidae family (Panagrolaimus sp. PS1159). In the Panagrolaimidae family, pumping occurred in the corpus, posterior isthmus and TB, whereas peristalsis occurred in the anterior isthmus. Corpus pumping, anterior isthmus peristalsis, and posterior isthmus/TB pumping all occurred independently.

• Movie 5 -

  Movie 5. Video of pharyngeal behaviors in the outgroup Teratocephalus (Teratocephalus lirellus PDL0011). In T. lirellus, pumping occurred in the corpus and TB, whereas peristalsis occurred in the entire isthmus. Corpus pumping, isthmus peristalsis, and TB pumping all occurred independently.