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| Clade | |
| Subclade | |
| Taxon | |
| Taxon |
Ankylopollexia
|
| Nominal Author | Sereno 1986 |
| 2nd Nominal Author | |
| Taxon Status | ACTIVE |
| Comments | Coined by Sereno (1986) and defined by Sereno (1998), Ankylopollexia was named after the apomorphic stiff cone-shaped thumb that characterizes most members and defined as a node-based taxon. The active phylogenetic definition is a first-order revision that uses species instead of genera. |
| Potential Synonomy | |
| Active Phylogenetic Definition | |
| Active Definition |
The least inclusive clade containing Camptosaurus dispar (Marsh 1879) and Parasaurolophus walkeri Parks 1922.
|
| Shorthand |
< Camptosaurus dispar and Parasaurolophus walkeri. |
| Definitional Author |
Sereno 2005 |
| Definition Status | checked |
| Definition Type | NODE |
| Node-Stem Triplet | NODE |
| Other Triplet Taxa |
Camptosauridae, Styracosterna |
| Specifiers | |
| Specifier(s) A |
Camptosaurus dispar |
| Specifier(s) B |
Parasaurolophus walkeri |
| Specifier(s) C | |
| Qualifiers | |
| +Taxon | |
| -Taxon | |
| Datum | |
| Taxonomic Content | |
| Publication Year |
Unknown Unknown Unknown 1998 |
| Inactive Taxon Status | |
| Rejection Criteria | |
| Critique | |
| Definitional History #1 | |
| Earliest Record | Camptosaurus, Parasaurolophus, their most recent common ancestor and all descendants. |
| Latest Record | Sereno 1998:62 |
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| Range (My) |
Camptosaurus, Parasaurolophus |
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