Shiva creates Vishnu from the left of his body and Brahma from the right (through the lotus from Vishnu's navel), assigns creation, preservation and destruction, and stands beyond all three.
In the Shiva Purana's account of the beginning, Shiva himself is the only reality beyond spirit and matter. Wishing to create, he draws Vishnu out of the left side of his body — the most beautiful being in the three worlds, made of the quality of goodness — names him Hari and sends him to austerities; from Vishnu's navel a great lotus grows, and out of the right side of Shiva's body comes four-headed Brahma. Shiva then distributes the work: Brahma will create, Vishnu will preserve, and Rudra, from Shiva's own centre, will dissolve — so that Shiva takes three forms. Vishnu answers that he is Shiva's devotee and Shiva his beloved. Pattanaik reads the whole Purana as the story of Shiva's socialisation from hermit to householder; attribute that to him.
What is different here:
Base telling of this frame. The Bhagavata reverses it (Rudra from Brahma's brow, Brahma from Vishnu's navel); the two coexist as rival charters.