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Clade
Subclade Archosauria: Avemetatarsalia to Neornithes 

Taxon Feedback
Taxon Apatornithidae 
Nominal Author Fürbringer 1888 
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  
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 Fürbringer (1888) erected this redundant, monotypic taxon to include Apatornis celer. Both Apatornithidae and Ichthyornithidae (containing Ichthyornis dispar) were placed by Fürbringer (1888) as members of Ichthyornithiformes. 
 

Current Age Range Feedback
Earliest Record  
Latest Record  
Range (My)  
Basis for Range  

Additional Definitional History: None Available