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Borealosuchus
Taxonomy
Borealosuchus was named by Brochu (1997).
It was assigned to Mesoeucrocodylia by Pol and Norell (2004); to Alligatoroidea by Martin and Buffetaut (2008); to Neosuchia by Zaher et al. (2006), Fiorelli and Calvo (2008), Nascimento and Zaher (2011), Sertich and O'Connor (2014); to Eusuchia by Martin et al. (2010), Bronzati et al. (2012), Rio and Mannion (2021), Darlim et al. (2022); and to Crocodylia by Brochu (1997), Brochu (2000), Wu et al. (2001), Osi et al. (2007), Burger (2007), Jouve et al. (2008), Puértolas et al. (2011), Brochu et al. (2012), Farke et al. (2014), Lessner et al. (2025).
It was assigned to Mesoeucrocodylia by Pol and Norell (2004); to Alligatoroidea by Martin and Buffetaut (2008); to Neosuchia by Zaher et al. (2006), Fiorelli and Calvo (2008), Nascimento and Zaher (2011), Sertich and O'Connor (2014); to Eusuchia by Martin et al. (2010), Bronzati et al. (2012), Rio and Mannion (2021), Darlim et al. (2022); and to Crocodylia by Brochu (1997), Brochu (2000), Wu et al. (2001), Osi et al. (2007), Burger (2007), Jouve et al. (2008), Puértolas et al. (2011), Brochu et al. (2012), Farke et al. (2014), Lessner et al. (2025).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Leidyosuchus riggsi Schmidt p. 318 |
| 1986 | Leidyosuchus riggsi Lucas and Sullivan p. 36 |
| 1997 | Borealosuchus Brochu |
| 2000 | Borealosuchus Brochu p. 181 |
| 2001 | Borealosuchus Wu et al. p. 1691 |
| 2004 | Borealosuchus Pol and Norell |
| 2006 | Borealosuchus Zaher et al. |
| 2007 | Borealosuchus Burger p. 144 |
| 2007 | Borealosuchus Osi et al. |
| 2008 | Borealosuchus Fiorelli and Calvo |
| 2008 | Borealosuchus Jouve et al. |
| 2008 | Borealosuchus Martin and Buffetaut |
| 2010 | Borealosuchus Martin et al. |
| 2011 | Borealosuchus Nascimento and Zaher |
| 2011 | Borealosuchus Puértolas et al. |
| 2012 | Borealosuchus Brochu et al. |
| 2012 | Borealosuchus Bronzati et al. |
| 2014 | Borealosuchus Farke et al. |
| 2014 | Borealosuchus Sertich and O'Connor |
| 2021 | Borealosuchus Rio and Mannion |
| 2022 | Borealosuchus Darlim et al. |
| 2025 | Borealosuchus Lessner et al. |
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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. †Borealosuchus Brochu 1997
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†Borealosuchus acutidentatus Sternberg 1932
†Borealosuchus formidabilis Erickson 1976
†Borealosuchus griffithi Wu et al. 2001
†Borealosuchus sternbergii Gilmore 1910
†Borealosuchus threeensis Brochu et al. 2012
Invalid names: Leidyosuchus riggsi Schmidt 1938 [nomen dubium]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum, uc = unranked clade | |||||
| References: Bush and Bambach 2015, Carroll 1988, Kiessling 2004, Benton 1983 | |||||
Age range: base of the Early/Lower Campanian to the top of the Priabonian or 83.60000 to 33.90000 Ma
Collections (134 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Campanian - Middle Campanian | USA (North Carolina) | B. sp. (128412) Crocodilidae indet., Leidyosuchus sp. (57918) | |
| Middle Campanian | USA (South Carolina) | B. sp. (180790 201600) | |
| Middle Campanian - Late/Upper Campanian | USA (South Carolina) | B. sp. (79363) | |
| Late/Upper Campanian - Early/Lower Maastrichtian | USA (New Jersey) | B. sp. (221052) | |
| Lancian | USA (Montana) | Leidyosuchus sternbergi (14533 14534 14535 14536 14546 14548 14549 14552 14559 14574 14582 14615 14639 14654) | |
| Lancian | USA (South Dakota) | Leidyosuchus sternbergi (14537 192251) | |
| Lancian | USA (Colorado) | Leidyosuchus sternbergi (14640) | |
| Lancian | USA (Wyoming) | Leidyosuchus sternbergi (14505 14514 14519 14527 14538 14557 14566 14570 14578 14579 14596 14601 14625 14643 14644) | |
| Lancian | USA (North Dakota) | Leidyosuchus sternbergi (14610 14620 14621) | |
| Late/Upper Maastrichtian | USA (Montana) | B. sp. (183109) Leidyosuchus sternbergi (13142 14674) Leidyosuchus sternbergii (11931 99881) | |
| Late/Upper Maastrichtian | USA (North Dakota) | B. sp. (231464) Leidyosuchus sternbergi (45098 45099 45102 45109 45110 45111 45112 45114 45117 45118 45119 45120 45124 45128 45130 45134 45136 45137 45143 45144 45145 45299 45381 45382 45386) | |
| Late/Upper Maastrichtian | USA (Wyoming) | Leidyosuchus sternbergi (14585 57159 57166 57168) Leidyosuchus sternbergii (99864) | |
| Late/Upper Maastrichtian | USA (South Dakota) | B. sp. (224484) B. sternbergi (47034) Leidyosuchus sternbergi (45388 45390) | |
| Late/Upper Maastrichtian | USA (South Carolina) | B. sp. (201612) | |
| Maastrichtian | USA (North Dakota) | B. sp. (231466) Leidyosuchus sternbergi (45113 45313) | |
| Late/Upper Maastrichtian - Early/Lower Paleocene | USA (New Jersey) | Diplocynodon sp. (26819) | |
| Puercan | USA (Montana) | Leidyosuchus canadensis (123518) | |
| Puercan | USA (Colorado) | B. sternbergii (176750 176868 238106 238108 238109 238110) Crocodylia indet. (209936 209976 209987 210027) | |
| Puercan | Canada (Saskatchewan) | B. griffithi (230115) B. sternbergii (230116) | |
| Danian | Canada (Saskatchewan) | Leidyosuchus acutidentatus (22924) | |
| Danian | Canada (Alberta) | B. griffithi (25654) | |
| Torrejonian | USA (Texas) | B. sp. (14970 76029) | |
| Ti3 | USA (Colorado) | B. sp. (99821) | |
| Tiffanian | USA (North Dakota) | Leidyosuchus formidabilis (15000) | |
| Tiffanian - Clarkforkian | USA (Wyoming) | Leidyosuchus formidabilis (15211) | |
| Clarkforkian | USA (Colorado) | Leidyosuchus riggsi (15252) | |
| Clarkforkian | USA (Wyoming) | Leidyosuchus formidabilis (15091 15098 15108 15132 15147 15152 15155 15157 15159 15173 15174 15176 15184 15190 15192) | |
| Early/Lower Eocene | USA (Wyoming) | Leidyosuchus wilsoni (36713) | |
| Wasatchian | USA (Wyoming) | B. sp. (15458 59904 59906) | |
| Bridgerian | USA (Wyoming) | B. sp. (16264 16270 16272 16273 70266) Diplocynodon stuckeri (16253) | |
| Early/Lower Uintan | USA (Texas) | B. sp. (16196) | |
| Priabonian | USA (Arkansas) | Crocodylus sp. (16549) |