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Clade
Subclade

Taxon
Taxon
Nodosauridae
Nominal Author
Marsh 1890
2nd Nominal Author
Taxon Status ACTIVE
Comments
The active definition is a first-order revision of the initial definition proposed by Sereno (1998). It uses species rather than genera and also includes the more poorly known Nodosaurus textilis as an additional internal specifier to ensure inclusion of the type species. This species is referable to this clade, despite being listed recently as “Ankylosauria, incertae sedis” (Maryanska et al. 2004).
Potential Synonomy

Active Phylogenetic Definition
Active Definition
The most inclusive taxon containing Panoplosaurus mirus Lambe 1919 and Nodosaurus textilis Marsh 1889 but not Ankylosaurus magniventris Brown 1908.
Shorthand
> Panoplosaurus mirus, Nodosaurus textilis but not Ankylosaurus magniventris.
Definitional Author
Sereno 2005
Definition Status checked
Definition Type STEM
Node-Stem Triplet NO
Other Triplet Taxa
Specifiers
Specifier(s) A
Panoplosaurus mirus
Specifier(s) B
Nodosaurus textilis
Specifier(s) C
Ankylosaurus magniventris
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
1998

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
All ankylosaurs closer to Panoplosaurus than to Ankylosaurus.
Latest Record
Sereno 1998:61
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Panoplosaurus, Ankylosaurus
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