|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Thalattosauria
It was reranked as the suborder Thalattosauria by Nopcsa (1923) and Roxo (1937); it was reranked as the unranked clade Thalattosauria by Cheng et al. (2007).
It was assigned to Diaptosauria by Merriam (1905); to Pelycosauria by Nopcsa (1923); to Rhynchocephalia by Roxo (1937); to Lepidosauria by Kuhn (1966); to Diapsida by Nicholls and Brinkman (1993); to Thalattosauriformes by Nicholls (1999); to Reptilia by Kuhn (1946) and Sepkoski (2002); and to Diapsida by Carroll (1988) and Cheng et al. (2007).
|Year||Name and author|
|1905||Thalattosauria Merriam p. 5|
|1937||Thalattosauria Roxo p. 44|
|1946||Thalattosauria Kuhn p. 60|
|1966||Thalattosauria Kuhn p. 39|
|1993||Thalattosauria Nicholls and Brinkman p. 264|
|1999||Thalattosauria Nicholls p. 26|
|2002||Thalattosauria Sepkoski, Jr.|
|2007||Thalattosauria Cheng et al. p. 247|
Is something missing? Join the Paleobiology Database and enter the data
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.
|E. L. Nicholls 1999||It is diagnosed by the following synapomorphies— supratemporal fenestra further reduced to a slit; [2 ] parietal flange absent; [ 3 ] supratemporal bone deep, extending anteriorly to meet frontal;  anterior tip of premaxilla recurved;  mandibular symphysis recurved; 1281 diastema between maxillary and premaxillary teeth.|