“once we were plankton slouched in the ocean but now we are code, surfaced and held in the laminae of rock like open scores.” This narrative voice comes to us from the fossils of Graptolites, our long extinct plankton ancestry. Their speculative voice speaks to us from within deep time as they coil past and future, blending evidence of our interspecies story. In Eustatic Drift we experience the real and imaginary potential of the Graptolites, as a tangible index of a once dominant species, and as a latent oracle.