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Bathyspondylus fossil map

Where fossils of Bathyspondylus have been found, shown on the Earth as it looked about 145 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 145 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 →

Bathyspondylus
Image: Tawa99, CC BY-SA 4.0, via Wikimedia Commons
GroupPlesiosaurs & kin
Lived154.8–149.2 million years ago (Kimmeridgian)
PeriodsJurassic
Named byDelair 1982
Fossil records2 occurrences at 2 locations (PBDB)
Found inUnited Kingdom
Rock formationsKimmeridge Clay

About Bathyspondylus

Bathyspondylus is an extinct genus of plesiosaur from the Kimmeridge Clay Formation of Swindon, England. Because it is known only from its fossil vertebrae (and so few of those have been recovered), paleontologists are not entirely sure of the taxonomy of Bathyspondylus; the family it belongs to is not currently known. The type, and only known, species is B. swindoniensis, which was described from the same material as its genus.

Text in “About” is quoted from the Wikipedia article Bathyspondylus (revision 1372978620), 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: Q4120085.

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