Clade | |
Subclade |
Taxon | |
Taxon |
Carinatae
|
Nominal Author | Merrem 1813 |
2nd Nominal Author | |
Taxon Status | ACTIVE |
Comments | Chiappe (1995) was the first to define Carinatae and did so with a node-based definition. The active definition is a first-order revision of Chiappe (1995) that uses specifiers as species. Gauthier and de Queiroz (2001), in contrast, proposed an “apomorphy-based” definition (i.e. a stem-based definition with one internal specifier and a form qualifier [keeled sternum] marking the external boundary). They did not discuss Chiappe’s previous definition. They noted that one must “arbitrarily decide” what constitutes a ridge rather than a keel on a sternum, leaving that decision to “those describing such taxa.” This would appear to allow more interpretation than necessary in phylogenetic taxonomy. |
Potential Synonomy |
Active Phylogenetic Definition | |
Active Definition |
The least inclusive clade containing Ichthyornis dispar Marsh 1872 and Passer domesticus (Linnaeus 1758).
|
Shorthand |
< Ichthyornis dispar and Passer domesticus. |
Definitional Author |
Sereno 2005 |
Definition Status | checked |
Definition Type | NODE |
Node-Stem Triplet | NO |
Other Triplet Taxa | |
Specifiers | |
Specifier(s) A |
Ichthyornis dispar |
Specifier(s) B | |
Specifier(s) C |
Passer domesticus
|
Qualifiers | |
+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
Publication Year |
Unknown Unknown Unknown 1995 |
Inactive Taxon Status | |
Rejection Criteria | |
Critique | |
Definitional History #1 | |
Earliest Record | Ichthyornis and Neornithes plus all descendants of their most recent common ancestor. |
Latest Record | Chiappe 1995:350 |
Range (My) | |
Range (My) |
Ichthyornis, Neornithes |
Range (My) |
Definitional History #2 | |
Earliest Record | The clade stemming from the first panavian with a keeled sternum homologous with that of Aves (Vultur gryphus Linnaeus 1758). |
Latest Record | Gauthier and de Queiroz 2001:26 |
Range (My) | |
Range (My) |
Aves (Vultur gryphus Linnaeus 1758) |
Range (My) | keeled sternum |
Definitional History #3 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #4 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #5 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #6 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #7 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #8 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #9 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #10 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |