|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.
|P. S. Druckenmiller and A. P. Russell 2006||Elasmosaurid plesiosaur possessing the following unique combination of character states: interclavicle rectangular with rounded corners and possessing a notch along either the anterior or posterior margin (orientation to be confirmed upon the discovery of articulated material); ventral ramus of scapula reaches midline but lacks a broad contact with its opposite; scapula with a prominent posteriorly directed prong extending toward the coracoid; well-developed midline contact between scapula and coracoid (pectoral bar) present in adult; presence of a well-developed anterior process of the coracoid along the midline, contributing extensively to the pectoral bar; coracoid of adult with a very prominent, ventrally extending midline process; cordiform intercoracoid vacuity fully enclosed posteriorly by coracoids; humerus with a pronounced postaxial accessory facet.|