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Dakotaraptor steini
Taxonomy
Dakotaraptor steini was named by DePalma et al. (2015). Its type specimen is PBMNH.P10.113.T, a set of postcrania, and it is a 3D body fossil. Its type locality is Dakotaraptor Quarry, Bone Butte, which is in a Maastrichtian fluvial sandstone in the Hell Creek Formation of South Dakota.
Synonymy list
| Year | Name and author |
|---|---|
| 2015 | Dakotaraptor steini DePalma et al. p. 2–3 fig. 2–7 |
| 2018 | Dakotaraptor steini Brownstein p. 1123 |
| 2019 | Dakotaraptor steini Brownstein p. 8 |
| 2020 | Dakotaraptor steini Jasinski et al. p. 4 |
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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.
†Dakotaraptor steini DePalma et al. 2015
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. A. DePalma et al. 2015 | Dakotaraptor is diagnosed by the following characters; 1) an exceptionally large dromaeosaurid (approximately 5.5 m reconstructed adult length, estimated using the tibiae and femora of Dromaeosaurus, Deinonychus, and Utahraptor as a guide); 2) reduced flexor tubercle on pedal ungual IV; 3) lateral corial groove on pedal ungual IV is fully enclosed in a bone tube for about half of its distal length; 4) sharp ventral keel on pedal unguals II and III; 5) fibular crest is long, gracile, and its height does not exceed 9% of its total length; 6) proximal margin of fibular crest is hooked; lateral condyle of metacarpal II nearly the same size as medial condyle; 7) shallow collateral ligament fossa on lateral side of metacarpal II; 8) proximodorsal margin of metacarpal II is straight in dorsal view; 9) teeth have 15-20 denticles/5 mm on distal carina and 20-27 denticles/5 mm on mesial carina; 10) pedal ungual II (straight measurement) is approximately 29% of femur length. |
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| References: Holtz et al. 2000, Marsh 1875, Kiessling 2004 | |||||
Age range: Late/Upper Maastrichtian or 72.20000 to 66.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Maastrichtian | USA (South Dakota) | Dakotaraptor steini (type locality: 174241 224484) |