Complex sentence: Eric recognizes the sound of his father's satellite phone, which was lost when Nash was devoured; they're reunited with the Kirbys and Billy before the "Spinosaurus" arrives again with the satellite phone, ringing from inside the beast.
Split into simpler sentences: Eric recognizes the sound of his father's satellite phone, which was lost when Nash was devoured, and they're reunited with the Kirbys and Billy. The "Spinosaurus" arrives again, with the satellite phone ringing from inside the beast.