Megaloceras is a genus of the nautiloid order Oncocerida that lived during the Silurian period of the Paleozoic. It is included in the family Karoceratidae, characterized by compressed straight or exogastricly curved shells with slender ventral siphuncles.

  • Paleobiology Database 7/9/12
  • Walter C. Sweet, 1964. Nautiloidea-Oncocerida. Treatise on Invertebrate Paleontology, Part K. Geological Society of America and University of Kansas Press.