Author	Contenent	Country	Date	Period	Genus
Alberstadt	NA	USA - OK	1973	Ordovician	Rhynchotrema
Bolton	NA	Canada	1977	Ordovician	Rhynchotrema
Branson	NA	USA - MO	1923	Devonian	Rhynchotrema
Case	NA	USA - MI	1915	Devonian	Rhynchotrema
Chapman	Asia	Australia	1910	Silurian	Rhynchotrema
Cocks	Europe	Wales	1984	Silurian	Rhynchotrema
Demurova	Europe	Russia	1962	Ordovician	Rhynchotrema
Fenton	NA	USA - MO	1957	Ordovician	Rhynchotrema
Foerste	NA	USA - TN	1903	Ordovician	Rhynchotrema
Furnish	NA	USA - SD	1936	Ordovician	Rhynchotrema
Hall	NA	USA - NY	1860	Devonian	Rhynchotrema
Havlicek	Africa	Lybia	1973	Ordovician	Rhynchotrema
Howe	NA	USA - NM	1967	Ordovician	Rhynchotrema
Hussey	Arctic		1928	Ordovician	Rhynchotrema
Johnson	NA	USA - NV	1976	Silurian	Rhynchotrema
Koch	NA	Greenland	1929	Ordovician	Rhynchotrema
Ladd	NA	USA - IA	1929	Ordovician	Rhynchotrema
Laurie	Asia	Australia	1991	Ordovician	Rhynchotrema
Macomber	NA	USA - WY	1970	Ordovician	Rhynchotrema
Misius	Asia	Kirghizia	1986	Ordovician	Rhynchotrema
Mitchell	Europe	Ireland	1977	Ordovician	Rhynchotrema
Ockerman	NA	USA - WI	1926	Ordovician	Rhynchotrema
Oraspyld	Europe	Estonia	1956	Ordovician	Rhynchotrema
Reed	Europe	Scotland	1935	Ordovician	Rhynchotrema
Rice	NA	USA - MN	1985	Ordovician	Rhynchotrema
Ross	NA	USA - AK	1966	Ordovician	Rhynchotrema
Ross	NA	USA - MT	1957	Ordovician	Rhynchotrema
Rubel	Europe	Estonia	1977	Silurian	Rhynchotrema
Shrock	NA	USA - IN	1937	Ordovician	Rhynchotrema
Titus	NA	USA - NY	1986	Ordovician	Rhynchotrema