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Clade
Subclade Archosauria: Avemetatarsalia to Neornithes 

Taxon Feedback
Taxon Acrocanthosauridae 
Nominal Author Molnar 2003 
2° Nominal Author  
Taxon Status active
inactive
Comments  
Potential Synonomy  

Active Phylogenetic Definition Feedback
Active Definition  
Shorthand  
Definitional Author  
Definition Status original
textual substitution
first-order revision
second-order revision
Definition Type node
stem
Node-Stem Triplet yes
no
Other Triplet Taxa  
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Specifier A  
Specifier(s) B  
Specifier(s) C  
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+Taxon  
-Taxon  
Datum  
Taxonomic Content stem (entirely extinct)
crown (extant-bounded)
mixed (extant/extinct-bounded)
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Inactive Taxon Status Feedback
Rejection Criteria junior synonym
historically polyphyletic
incomplete definition
no definition
apomorphy-based
redundant
other 
Critique Acrocanthosauridae was coined by Molnar (2001:342) without explanation in a chapter on bone pathologies in theropods.  He mentioned Carcharodontosaurus saharicus, and so one presumes this is a family-level taxon with similar content to that already proposed for Carcharodontosauridae by Sereno et al. (1996).  Should the relationships of Acrocanthosaurus be resolved in a very different configuration than in Sereno et al. (1996), the taxon may ultimately have some utility.  For now, it is regarded as inactive. 
 

Current Age Range Feedback
Earliest Record  
Latest Record  
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Additional Definitional History: None Available