🦕 Prehistoric World Map

Opallionectes fossil map

Where fossils of Opallionectes have been found, shown on the Earth as it looked about 115 million years ago and on today’s map.

Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 115 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

GroupPlesiosaurs & kin
Lived119.57–113.2 million years ago (Aptian)
PeriodsCretaceous
Named byKear 2006
Fossil records1 occurrences at 1 locations (PBDB)
Found inAustralia
Rock formationsBulldog Shale

About Opallionectes

Opallionectes andamookaensis (meaning "the opal swimmer from Andamooka") is the name given to a 5 m (16 ft) long cryptoclidian plesiosaur, which is thought to have lived during the early Cretaceous period (Lower middle Aptian), 115 million years ago, in shallow seas covering what is now Australia.

Text in “About” is quoted from the Wikipedia article Opallionectes (revision 1300086107), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q3882804.

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