Classification of the genus Tarphyceras
G. †Tarphyceras Hyatt 1894
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†Tarphyceras apollo Billings 1861
†Tarphyceras aucoini Hyatt 1894
†Tarphyceras chadwickense Ulrich et al. 1942
†Tarphyceras champlainense Whitfield 1886
†Tarphyceras clarkei Ruedemann 1906
†Tarphyceras convolvens Angelin and Lindstrom 1880
†Tarphyceras extensum Hyatt 1894
†Tarphyceras multicameratum Ruedemann 1906
†Tarphyceras palinurus Billings 1861
†Tarphyceras perkinsi Whitfield 1897
†Tarphyceras prematurum Hyatt 1894