Monks, N. (July 2002). "Cladistic analysis of a problematic ammonite group: the Hamitidae (Cretaceous, Albian-Turonian) and proposals for new cladistic terms". Palaeontology. 45 (4): 689–707. doi:10.1111/1475-4983.00255.
Plotnick, Roy E.; Wagner, Peter J. (2006). "Round up the Usual Suspects: Common Genera in the Fossil Record and the Nature of Wastebasket Taxa". Paleobiology. 32 (1): 126–146. doi:10.1666/04056.1. JSTOR4096821.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
jstor.org
Plotnick, Roy E.; Wagner, Peter J. (2006). "Round up the Usual Suspects: Common Genera in the Fossil Record and the Nature of Wastebasket Taxa". Paleobiology. 32 (1): 126–146. doi:10.1666/04056.1. JSTOR4096821.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)