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Clade
Subclade Archosauria: Crurotarsi to Crocodylia 

Taxon Feedback
Taxon Crocodyliformes 
Nominal Author Hay 1930 
2° Nominal Author  
Taxon Status active
inactive
Comments Although the name was used by Clark (in Benton and Clark 1988) as a clade, it was first defined as a node-based taxon by Sereno et al. (2001:1519). The taxon has been used in this manner even after splitting various basal genera once regarded as “protosuchids” (Clark and Norell 2002). The active definition is a textual variant of the original definition. 
Potential Synonomy Crocodylia, Crocodiliformes (Hay 1930, spelling variant) 

Inactive Taxon Status Feedback
Rejection Criteria junior synonym
historically polyphyletic
incomplete definition
no definition
apomorphy-based
redundant
other 
Critique  
 

Current Age Range Feedback
Earliest Record Carnian (228 Ma) 
Latest Record Recent 
Range (My) 228 
Basis for Range The earliest records are protosuchids from late Carnian or early Norian beds of the petrified Forest Member of the Chinle Formation(Clark et al. 2000). The latest records are extant crocodilians. Dates are rounded to the nearest million, the earliest from the beginning of the stage (Gradstein et al. 2004). 

Definitional History #1
Definition 1 Protosuchus richardsoni, Crocodylus niloticus, and all descendants of their common ancestor. 
Author Sereno et al. 2001:1519 
Type node  stem 
Specifiers Protosuchus richardsoni, Crocodylus niloticus 
Qualifiers