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Ischyodus bifurcatus
Taxonomy
Ischyodus bifurcatus was named by Case (1978). Its type specimen is UM 334, a tooth, and it is a 3D body fossil. Its type locality is Hop Brook (HBR), which is in a Campanian/Maastrichtian coastal sandstone in the Navesink Formation of New Jersey.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1978 | Ischyodus bifurcatus Case p. 22 figs. Pl 1, figs a-d; text-figs 1-5 |
| 1979 | Ischyodus bifurcatus Case p. 226 figs. Pl 2, figs 1-3 |
| 1992 | Ischyodus bifurcatus Case and Schwimmer p. 347 figs. 2, 3.3 |
| 2014 | Ischyodus bifurcatus Cicimurri and Ebersole p. 10 figs. 8A-D, 9A-C |
| 2018 | Ischyodus bifurcatus Johnson-Ransom et al. p. 366 fig. 2 |
| 2022 | Ischyodus bifurcatus Ebersole et al. p. 373 figs. 3A-D |
| 2024 | Ischyodus bifurcatus Boles et al. p. 176 fig. 2B |
| 2025 | Ischyodus bifurcatus Nelson et al. p. 105 fig. 6C |
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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.
†Ischyodus bifurcatus Case 1978
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Wagner 2023 | |||||
Age range: base of the Late/Upper Santonian to the top of the Early/Lower Maastrichtian or 85.70000 to 66.00000 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cretaceous | USA (New Jersey) | Ischyodus bifurcatus (125224) | |
| Late/Upper Santonian | Germany | Ischyodus bifurcatus (177609) | |
| Early/Lower Campanian | Russian Federation (Saratov) | Ischyodus bifurcatus (86332 157353 224997) | |
| Early/Lower Campanian - Middle Campanian | USA (North Carolina) | Ischyodus bifurcatus (57918) | |
| Late/Upper Campanian | USA (Montana) | Ischyodus bifurcatus (69150) | |
| Late/Upper Campanian | USA (Delaware) | Ischyodus bifurcatus (27570) | |
| Late/Upper Campanian | USA (California) | Ischyodus bifurcatus (176400) | |
| Late/Upper Campanian | USA (New Jersey) | Ischyodus bifurcatus (14455 32181 221052) | |
| Middle Campanian | USA (Georgia) | Ischyodus bifurcatus (242327) | |
| Middle Campanian | USA (Mississippi) | Ischyodus bifurcatus (277690) | |
| Middle Campanian - Late/Upper Campanian | USA (Montana) | Ischyodus bifurcatus (69161) | |
| Late/Upper Campanian - Early/Lower Maastrichtian | USA (New Jersey) | Ischyodus bifurcatus (14504 57916 type locality: 213744 213745) | |
| Late/Upper Maastrichtian - Early/Lower Paleocene | USA (New Jersey) | Ischyodus bifurcatus (26819) |