Very rough
plesiosaur phylogeny of O'Keefe (2001)
in a stratigraphical context (under construction) Key: Blue = Plesiosauroidea,
Red = Pliosauroidea, Orange = Non-plesiosauria
taxa.
Table summarising
the chronostratigraphy of the Mesozoic era. It is listed in reverse chronological
order (youngest to oldest).
| Cretaceous
|
Upper
|
Maastrichtian
|
(Keuper
(Mid Ladinian - End Carnian). Muschelkalk
(mid Anisian - mid Ladinian). Buntsandstein
(Scythian - mid Anisian)) |
| Campanian
|
| Santonian
|
| Coniacian
|
| Turonian
|
| Cenomanian
|
| Lower
|
Albian
|
| Aptian
|
| Barremian
|
| Hauterivian
|
| Valanginian
|
| Berriasian
|
| Jurassic
|
Upper
|
Tithonian
|
| Kimmeridgian
|
| Oxfordian
|
| Middle
|
Callovian
|
| Bathonian
|
| Bajocian
|
| Aalenian
|
| Lower
|
Toarcian
|
| Pliensbachian
|
| |
| Hettangian
|
| Triassic
|
Upper
|
Rhaetian
|
| Norian
|
| Carnian
|
| Middle
|
Ladinian
|
| Anisian
|
| Lower
|
Scythian
|
