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Clade
Subclade

Taxon
Taxon
Ankylosauromorpha
Nominal Author
Carpenter 2001
2nd Nominal Author
Taxon Status INACTIVE
Comments
Potential Synonomy
Ankylosauria

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 redundant
other
Critique

Carpenter (2001) coined Ankylosauromorpha for a clade linking Scelidosaurus harrisonii and ankylosaurs, a controversial arrangement supported recently by Butler (2005) but different than that found by Sereno (1986, 1999) and Norman et al. (2004).

Carpenter (2001:455, 471) inadvertantly provided two stem-based definitions for this taxon, although stating that these were node-based (Carpenter 2001:455).  If Sereno and Norman are correct, then Carpenter’s definitions (the two proposed) are either redundant with Scelidosaurus or have no taxonomic content.  If Carpenter and Butler’s arrangement is supported, then the taxon is redundant with stem-based Ankylosauria, as defined here and by Sereno (1998).

 

Definitional History #1
Earliest Record
All thyreophorans closer to Scelidosaurus than to Stegosaurus.
Latest Record
Carpenter 2001:455
Range (My)
Range (My)
Scelidosaurus, Stegosaurus
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Definitional History #2
Earliest Record
Thyreophorans that are closer to Scelidosaurus, Minmi, Polacanthidae, Nodosauridae, and Ankylosauridae, than to Stegosaurus.
Latest Record
Carpenter 2001:471
Range (My)
Range (My)
Scelidosaurus, Minmi, Polacanthidae, Nodosauridae, Ankylosauridae, Stegosaurus
Range (My)

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