Clade | |
Subclade |
Taxon | |
Taxon |
Rhabdodontidae
|
Nominal Author | Weishampel et al. 2003 |
2nd Nominal Author | |
Taxon Status | ACTIVE |
Comments | Weishampel et al. (2002:69) coined and defined a node-based taxon Rhabdodontidae for several unusual ornithopods from Europe. They did not discuss why they chose a node-based definition, which suffers from the fragmentary nature and unknown relationships of many of the species associate with the group. This situation was aknowldged, but that does little to establish Rhabdodontidae as the “sibling clade Iguanodontia” (Weishampel et al. 2002:65). If one or more of these species falls outside a clade defined by the two species chosen as specifiers, it will lie outside Rhabdodontidae as they have defined it. The revision implemented here is to use a stem-based definition based on Rhabdodon priscus, a well known member and eponymous species for Rhabdodontidae. Weishampel et al. (2003:68) excluded Rhabdodontidae from Iguanodontia, but this is clearly not how Iguanodontia was previously conceived and defined (Sereno 1986, 1998, 1999a, b). Iguanodontia was used to include all ornithopods more advanced than taxa that were considered hypsilphodontids. Rhabdodon (= Mochlodon) was regarded as an iguanodontian (Sereno 1986) less derived than Camptosaurus (Sereno, 1997:449). This is precisely how Weishampel et al. (2003:fig. 35) have positioned the taxon Rhabdodontidae. For reasons that are not clear, they position Iguanodontia at a less inclusive node on their cladogram. |
Potential Synonomy |
Active Phylogenetic Definition | |
Active Definition |
The most inclusive clade containing Rhabdodon priscus Matheron 1869 but not Parasaurolophus walkeri Parks 1922.
|
Shorthand |
> Rhabdodon priscus but not Parasaurolophus walkeri. |
Definitional Author |
Sereno 2005 |
Definition Status | checked |
Definition Type | STEM |
Node-Stem Triplet | NO |
Other Triplet Taxa | |
Specifiers | |
Specifier(s) A |
Rhabdodon priscus |
Specifier(s) B | |
Specifier(s) C |
Parasaurolophus walkeri
|
Qualifiers | |
+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
Publication Year |
Unknown Unknown Unknown 2005 |
Inactive Taxon Status | |
Rejection Criteria | |
Critique | |
Definitional History #1 | |
Earliest Record | The most recent common ancestor of Zalmoxes robustus and Rhabdodon priscus and all the descendants of this common ancestor. |
Latest Record | Weishampel et al. 2003:69 |
Range (My) | |
Range (My) |
Zalmoxes robustus, Rhabdodon priscus |
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