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Clade
Subclade Archosauria: Avemetatarsalia to Neornithes 
Taxon Feedback
Taxon Acanthopholididae 
Nominal Author Nopcsa 1902 
2° Nominal Author  
Taxon Status active
inactive
Comments  
Potential Synonomy Acanthopholidae (Nopcsa 1917, spelling variant), Acanthopolidae (Nopcsa 1923, spelling variants) 
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  
Specifiers
Specifier A  
Specifier(s) B  
Specifier(s) C  
Qualifiers
+Taxon  
-Taxon  
Datum  
Taxonomic Content stem (entirely extinct)
crown (extant-bounded)
mixed (extant/extinct-bounded)
Publication Year  
Inactive Taxon Status Feedback
Rejection Criteria junior synonym
historically polyphyletic
incomplete definition
no definition
apomorphy-based
redundant
other 
Critique No definition has been proposed. Romer (1956) included within this taxon Acanthopholis, Hylaeosaurus, Onychosaurus, Rhodanosaurus, and Struthiosaurus, whereas Steel (1969) included within this taxon Acanthopholis, Hylaeosaurus, Struthiosaurus, and several other fragmentary genera. Cooper (1985) used this family in place of the much more widely adopted Ankylosauridae. 
 
Current Age Range Feedback
Earliest Record  
Latest Record  
Range (My)  
Basis for Range  
Additional Definitional History: None Available