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Boreonykus certekorum

Reptilia - Avetheropoda - Dromaeosauridae

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. It is the type species of Boreonykus.

Synonymy list
YearName and author
2016Boreonykus certekorum Bell and Currie p. 2

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
RankNameAuthor
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptoriformes
familyDromaeosauridae
genusBoreonykus
speciescertekorum

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.

Diagnosis
ReferenceDiagnosis
P. R. Bell and P. J. Currie 2016Boreonykus 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
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: solitaryo
Environment: terrestrialf
Locomotion: actively mobileo
Life habit: ground dwellingf
Diet: carnivoref
Reproduction: oviparousf
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-09-11 17:04:18
Modified: 2005-09-11 19:04:18
Source: f = family, o = order
References: Kiessling 2004, Holtz et al. 2000, Marsh 1875

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
Late/Upper Campanian83.5 - 70.6Canada (Alberta) Dromaeosauridae indet., Saurornitholestes sp. (type locality: 22699)