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Trinodus
Taxonomy
Trinodus was named by M'Coy (1846). It is not extant. Its type is Trinodus agnostiformis.
It was assigned to Geragnostinae by Harrington and Leanza (1957); to Geragnostidae by Owen and Bruton (1980); to Agnostida by Sepkoski (2002); and to Metagnostidae by Whittington et al. (1997), Jell and Adrain (2002) and Owens and Fortey (2009).
It was assigned to Geragnostinae by Harrington and Leanza (1957); to Geragnostidae by Owen and Bruton (1980); to Agnostida by Sepkoski (2002); and to Metagnostidae by Whittington et al. (1997), Jell and Adrain (2002) and Owens and Fortey (2009).
Species
T. agnostiformis (type species), T. clusus, T. cylindricus, T. elspethi, T. jujuyensis, T. saltaensis, T. tardus
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1846 | Trinodus M'Coy |
| 1957 | Trinodus Harrington and Leanza |
| 1980 | Trinodus Owen and Bruton |
| 1997 | Trinodus Whittington et al. p. 377 |
| 2002 | Trinodus Jell and Adrain p. 455 |
| 2002 | Trinodus Sepkoski |
| 2009 | Trinodus Owens and Fortey |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Trinodus M'Coy 1846
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†Trinodus agnostiformis McCoy 1846
†Trinodus clusus Whittington 1963
†Trinodus cylindricus Chen in Li 1975
†Trinodus elspethi Raymond 1925
†Trinodus jujuyensis Harrington 1938
†Trinodus saltaensis Harrington and Leanza 1957
†Trinodus tardus Barrande 1846
Diagnosis
No diagnoses are available