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Tomagnostus fissus
Taxonomy
Agnostus fissus was named by Lundgren (1879).
It was recombined as Ptychagnostus (Ptychagnostus) fissus by Westrop et al. (1996); it was recombined as Tomagnostus fissus by Robison (1994) and Naimark and Pegel (2017).
It was recombined as Ptychagnostus (Ptychagnostus) fissus by Westrop et al. (1996); it was recombined as Tomagnostus fissus by Robison (1994) and Naimark and Pegel (2017).
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1879 | Agnostus fissus Lundgren p. 1879 fig. 23 |
1994 | Tomagnostus fissus Robison p. 59 fig. 30 |
1996 | Ptychagnostus (Ptychagnostus) fissus Westrop et al. p. 819 |
2017 | Tomagnostus fissus Naimark and Pegel |
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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.
†Tomagnostus fissus Lundgren 1879
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: f = family, o = order | |||||
References: Kiessling 2004, Hendy 2009 |
Age range: base of the Amgan to the top of the Dresbachian or 510.20000 to 485.40000 Ma
Collections (13 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Branchian | United Kingdom (England) | Tomagnostus fissus (225240) | |
Amgan | Kazakhstan | Tomagnostus fissus (9971) | |
Arcadian | Canada (Newfoundland and Labrador) | Ptychagnostus fissus (9689 9690) | |
St Davids | Greenland | Tomagnostus fissus (10478) | |
Tuesaian | Kazakhstan | Tomagnostus fissus (9968) | |
Menevian | United Kingdom (Wales) | Tomagnostus fissus (198942) | |
Marjumian | USA (South Carolina) | Tomagnostus fissus (75062 75063) | |
Marjumian | Canada (Newfoundland and Labrador) | Ptychagnostus fissus (9632 9633 9680) | |
Dresbachian | Canada (Newfoundland and Labrador) | Ptychagnostus fissus (9702) |