Stenopterygiidae
Stenopterygiidae are a family of the Ichthyosauria, a group of extinct marine reptiles that superficially resemble fish. They are distinguished from other ichthyosaurs by the arrangement of the flipper bones and by the broad attachment of the fins to the body.

Internet Archive Book Images · No restrictions · 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
- ThunnosauriaPBDB
- Diet
- carnivorePBDB, for Ichthyosauria
- Life habit
- nektonicPBDB, for Ichthyopterygia
- Motility
- actively mobilePBDB, for Ichthyosauria
- Environment
- marinePBDB, for Ichthyosauria
Time the record covers
At most 2.5 million years on record.
The one occurrence read is dated to somewhere between 182.9 Mya and 180.4 Mya, which is a dating window rather than a span.
1 occurrence of Stenopterygiidae on record, most of them in the Early Jurassic. 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- Early Jurassic100%
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.
Stenopterygiidae and its relatives
Early JurassicWhere Stenopterygiidae and its relatives were recorded in the Early Jurassic.
Found in the same rock
10 taxa- Cenoceras astacoides1 site
- Cenoceras belmontense1 site
- Cenoceras ciryi1 site
- Cenoceras thiollieri1 site
- Hybodontiformes1 site
- Hybodus1 site
- Neoselachii1 site
- Semionotiformes1 site
- Temnodontosaurus azerguensis1 site
- Thalattosuchia1 site
The Paleobiology Database records 1 site for Stenopterygiidae, 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Stenopterygiidae
- Source
- Wikipedia/Commons
- Credit
- Internet Archive Book Images
- Licence
- No restrictions
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Stenopterygiidae 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 itThunnosauria through timeFormations of the Early JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Kühn 1934)