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Clade
Subclade

Taxon
Taxon
Bullatosauria
Nominal Author
Holtz 1994
2nd Nominal Author
Taxon Status INACTIVE
Comments
Potential Synonomy

Active Phylogenetic Definition
Active Definition
Shorthand
Definitional Author
Definition Status Unknown
Definition Type Unknown
Node-Stem Triplet Unknown
Other Triplet Taxa
Specifiers
Specifier(s) A
Specifier(s) B
Specifier(s) C
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown

Inactive Taxon Status
Rejection Criteria no definition
Critique
Originally, this taxon was coined by Holtz (1994) for theropods with an inflated basisphenoid, which he restricted to ornithomimids and troodontids. Nearly all subsequent analyses position these two groups at some distance within coelurosaurian phylogeny.
 

Definitional History #1
Earliest Record
The most recent common ancestor of Ornithomimus and Troodon and all descendants of that common ancestor.
Latest Record
Holtz 1994:
Range (My)
Range (My)
Ornithomimus, Troodon
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Definitional History #2
Earliest Record
All taxa phylogenetically bracketed by Ornithomimus and Troodon.
Latest Record
Senter et al. 2004:18
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Ornithomimus, Troodon
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Definitional History #3
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Definitional History #4
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Definitional History #5
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Definitional History #6
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Definitional History #7
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Definitional History #8
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Definitional History #9
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Definitional History #10
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