|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Sauropterygia - Elasmosauridae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|J. J. Sepkoski 2002||Vertebrae all short, much wider than long with articular faces flat. Ribs single-headed throughout. Coracoids without clavicular processes widely separated. Obturator foramina not separated? Ischia triradiate curved plates uniting at anterior-internal angle, posterior angles widely separated. Humerus and femur of equal length.|