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Clade
Subclade

Taxon
Taxon
Unenlagiinae
Nominal Author
Bonaparte 1999
2nd Nominal Author
Taxon Status ACTIVE
Comments

Makovicky et al. (1999) provided a phylogenetic definition for a taxon originally erected as a subfamily by Bonaparte (1999) for Unenlagia comahuensis (Novas and Puerta 1997). The intention of the initial definition provided by Makovicky et al. (2005) was to unite Unenlagia with other southern forms such as Buitreraptor and Rahonavis. The analysis shows only a weak association among these taxa; other authors have placed Unenlagia and/or Rahonavis closer to Aves.

The active definition, therefore, places additional constraints on its potential taxonomic content (by including three additional external specifiers) to ensure that it does not include Aves or subsume another dromaeosaurid taxon of equivalent Linnean rank (e.g. Dromaeosaurinae, Microraptorinae, Velociraptorinae).

Potential Synonomy

Active Phylogenetic Definition
Active Definition
The most inclusive clade containing Unenlagia comahuensis Novas and Puerta 1997 but not Velociraptor mongoliensis Osborn 1924, Dromaeosaurus albertensis Matthew and Brown 1922, Microraptor zhaoianus Xu et al. 2000, Passer domesticus (Linnaeus 1758).
Shorthand
> Unenlagia comahuensis but not Velociraptor mongoliensis, Dromaeosaurus albertensis, Microraptor zhaoianus, Passer domesticus.
Definitional Author
Sereno 2005
Definition Status checked
Definition Type STEM
Node-Stem Triplet NO
Other Triplet Taxa
Specifiers
Specifier(s) A
Unenlagia comahuensis
Specifier(s) B
Specifier(s) C
Velociraptor mongoliensis, Dromaeosaurus albertensis, Microraptor zhaoianus, Passer domesticus
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
2005

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
All taxa closer to Unenlagia comahuensis than to Velociraptor mongoliensis.
Latest Record
Makovicky et al. 2005: [on-line supplementary information]
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Unenlagia comahuensis, Velociraptor mongoliensis
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