Omphalosaurus nevadanus
Omphalosaurus is an extinct genus of marine reptile from the Early Triassic to Middle Triassic, thought to be in the order of Ichthyosauria. Most of what is known about Omphalosaurus is based on multiple jaw fragments, ribs, and vertebrae. Specimens of Omphalosaurus have been described from the western United States, Poland, Austria and the island of Spitsbergen off the northern coast of Norway.

Uncredited · Public Domain · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- OmphalosaurusPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Diapsida
Time the record covers
At most 10 million years on record.
The one occurrence read is dated to somewhere between 247 Mya and 237 Mya, which is a dating window rather than a span.
1 occurrence of Omphalosaurus nevadanus on record, most of them in the Middle Triassic. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
1 occurrences- Middle Triassic100%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
1 formation
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The named rock units Omphalosaurus nevadanus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Omphalosaurus nevadanus and its relatives
Middle TriassicWhere Omphalosaurus nevadanus and its relatives were recorded in the Middle Triassic.
Found in the same rock
6 taxa- Acrodus alexandrae1 site
- Cymbospondylus1 site
- Cymbospondylus natans1 site
- Cymbospondylus petrinus1 site
- Ichthyosauria1 site
- Phalarodon fraasi1 site
The Paleobiology Database records 1 site for Omphalosaurus nevadanus, and this reads all of them. The number is how many of those sites it was catalogued from too.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
1 referenceEach of the 1 occurrence read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Omphalosaurus nevadanus
- Source
- Wikipedia/Commons
- Credit
- Uncredited
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Omphalosaurus nevadanus was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itOmphalosaurus through timeFormations of the Middle TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Merriam 1906