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Boreonykus certekorum
Taxonomy
Boreonykus certekorum was named by Bell and Currie (2016). Its type specimen is TMP 1989.055.0047, a partial skull (right frontal), and it is a 3D body fossil. Its type locality is Pipestone Creek Bonebed (RTMP), which is in a Campanian crevasse splay siltstone/sandstone in the Wapiti Formation of Canada.
Synonymy list
Year | Name and author |
---|---|
2016 | Boreonykus certekorum Bell and Currie p. 2 |
2021 | Boreonykus certekorum Holland et al. p. 3 |
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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.
†Boreonykus certekorum Bell and Currie 2016
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Diagnosis
Reference | Diagnosis | |
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P. R. Bell and P. J. Currie 2016 | Boreonykus is diagnosed by a single autapomorphy: supratemporal ridge on frontals forming an acute angle (55°) anteriorly. It can be further differentiated from all other dromaeosaurids by the following unique combination of characters: frontal elongate and slender; low supratemporal ridge forming an arc that is concave relative to interfrontal suture in dorsal view; and area immediately posterior to supratemporal ridge smooth and posteroventrally sloping. Boreonykus is differentiated from the penecontemporaneous Saurornitholestes in having a more robust frontal, a supratemporal ridge that is not sinuous, and lacks a distinct pit on its posterolateral surface. It is further distinguished from Dromaeosaurus in having slender and elongate frontals that are dorsally flat and are not widely separated anteromedially by the overlapping nasals. Furthermore, the dorsolateral contact for the lacrimal is not slot-like but has an elongate sutural surface. |
Measurements
No measurements are available
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Source: f = family, o = order | |||||
References: Marsh 1875, Holtz et al. 2000 |
Age range: Late/Upper Campanian or 83.50000 to 70.60000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Late/Upper Campanian | Canada (Alberta) | Dromaeosauridae indet., Saurornitholestes sp. (type locality: 22699) |