J. Alan Holman, onye ọkà mmụta ihe ochie na onye ọkà mmụta ihe ọkụkụ, buru ụzọ chọpụta ihe ndị fọdụrụ na-adịgide adịgide na Cumberland Cave, Maryland (na nso Corriganville), nke dị na Irvingtonian (site na 1.8 ruo 300,000 afọ gara aga). Nchọpụta nke abụọ bụ nke Rancholabrean (n'etiti 300,000 na 11,000 afọ gara aga) shell iberibe na Giant Cement Quarry na South Carolina (na nso Harleyville), nke Bentely na Knight mere na 1998. Ihe karyotype nke turtle turtle mejupụtara 50 chromosomes. Ajụjụ: Olee aha abụọ Alan Holman nwere?
ọkà mmụta ihe ochie na ọkà mmụta ihe ọkụkụ