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Clade
Subclade

Taxon
Taxon
Nodosaurinae
Nominal Author
Marsh 1890
2nd Nominal Author
Abel 1919
Taxon Status ACTIVE
Comments

Nodosaurinae was initially defined by Sereno (1998) as a stem-based taxon using genera as specifiers, with Panoplosaurus as an internal specifier and Sarcolestes and Hylaeosaurus as external specifiers. The active definition is a first-order revision. It includes the less completely known Nodosaurus textilis as an additional internal specifier to ensure inclusion of the nominotypical species and cites three well known basal species as external specifiers (Polacanthus foxii, Hylaeosaurus armatus, Mymoorapelta maysi).

The authorship of the genus and species of Polacanthus foxii
(Owen 1865; in Anonymous 1865) and spelling of the species epithet (foxii versus foxi) are reviewed by Pereda-Suberbiola (1994).  The genus and species were incorrectly attributed to Huxley (1867) and Hulke (1881), respectively, in a recent taxonomic review (Vickaryous et al. 2004).

The early ankylosaur Sarcolestes leedsi, based on a lower jaw from the Middle Jurassic (Callovian) of England, is no longer used as an external specifier, given the limited information available concerning its morphology. Synapomorphies visible on the specimen, however, support its referral to a basal position within Nodosauridae (and thus the early split between Nodosauridae and Ankylosauridae) rather than a more general assignment to Ankylosauria incertae sedis (Maryanska et al. 2004).

Potential Synonomy
Notosaurinae (Koken 1900, spelling variant)

Active Phylogenetic Definition
Active Definition
The most inclusive taxon containing Panoplosaurus mirus Lambe 1919 and Nodosaurus textilis Marsh 1889 but not Polacanthus foxii, Owen 1865, Hylaeosaurus armatus Mantell 1833, Mymoorapelta maysi Kirkland and Carpenter 1994.
Shorthand
> Panoplosaurus mirus, Nodosaurus textilis but not Polacanthus foxii, Hylaeosaurus armatus, Mymoorapelta maysi.
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
Polacanthus foxii, Hylaeosaurus armatus, Mymoorapelta maysi
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
1998

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
All nodosaurids closer to Panoplosaurus than to either Sarcolestes or Hylaeosaurus.
Latest Record
Sereno 1998:61
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Panoplosaurus, Sarcolestes, Hylaeosaurus
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