Exceptionally preserved conodont apparatuses with giant elements from the Middle Ordovician Winneshiek Konservat-Lagerstätte, Iowa, USA
Huaibao P. Liu, Stig M. Bergström, Brian J. Witzke, Derek E. G. Briggs, Robert M. McKay, Annalisa Ferretti
Specimens Cited: 102852 102853 139854 139884 139885 139886 139887 139888 102883 139894 139904 139898A 139898C 139905 139899 139900 139901 139889 139890 139891 139892 139893 139894 139895 139896 139897 139898A 139899 139905 139900 139898C 139901 139902 139903 139882