Clade | |
Subclade |
Taxon | |
Taxon |
Dryosauridae
|
Nominal Author | Milner and Norman 1984 |
2nd Nominal Author | |
Taxon Status | ACTIVE |
Comments | The active dfinition is a first-order revision of the previous existing definition (Sereno 1998) that uses species as specifiers. Note that the nominal author of the family group is Milner and Norman 1984. Deraniyagala (1939) was actually first to use the taxon name, but it was an error in the spelling (inversion of the “y” and “r”) of the crocodylomorph taxon Dyrosauridae (as has occasionally occurred since). |
Potential Synonomy | Dryosauridae (Deraniyagala 1939, spelling variant of crocdilian family Dyrosauridae; not considered the primary source of name) |
Active Phylogenetic Definition | |
Active Definition |
The most inclusive clade containing Dryosaurus altus (Marsh 1878) but not Parasaurolophus walkeri Parks 1922.
|
Shorthand |
> Dryosaurus altus 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 |
Dryosaurus altus |
Specifier(s) B | |
Specifier(s) C |
Parasaurolophus walkeri
|
Qualifiers | |
+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
Publication Year |
Unknown Unknown Unknown 1998 |
Inactive Taxon Status | |
Rejection Criteria | |
Critique | |
Definitional History #1 | |
Earliest Record | All iguanodontians closer to Dryosaurus than to Parasaurolophus. |
Latest Record | Sereno 1998:61 |
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Range (My) |
Dryosaurus, Parasaurolophus |
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Definitional History #10 | |
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