Peipiaosteus
Peipiaosteus is an extinct genus of prehistoric chondrostean ray-finned fish. Its fossils are found in the Early Cretaceous Jiufotang Formation, Pani Lake, Liaoning Province, China.

Seth.sorensen · CC BY-SA 3.0 · 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
- PeipiaosteidaePBDB
- Diet
- carnivorePBDB, for Acipenseriformes
- Life habit
- nektobenthicPBDB, for Acipenseriformes
- Motility
- actively mobilePBDB, for Acipenseriformes
Time the record covers
At most 13 million years on record.
Every occurrence read is dated to somewhere between 125.77 Mya and 113.2 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
6 occurrences of Peipiaosteus on record, most of them in the Early Cretaceous. 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
6 occurrences- Early Cretaceous100%
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
2 formations
- Yixian Formation · Jehol Group4
- Huajiying Formation1
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The named rock units Peipiaosteus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Peipiaosteus and its relatives
Early CretaceousWhere Peipiaosteus and its relatives were recorded in the Early Cretaceous.
Found in the same rock
23 taxa- Confuciusornis2 sites
- Jibeinia luanhera2 sites
- Yanosteus longidorsalis2 sites
- Anura1 site
- Asiatolepis muroii1 site
- Dendrorhynchoides curvidentatus1 site
- Eosestheria sp.1 site
- Ephemeropsis1 site
- Ephemeropsis trisetalis1 site
- Genibatrachus baoshanensis1 site
- Jinanichthys1 site
- Jinfengopteryx elegans1 site
- Khinganornis1 site
- Lycoptera1 site
- Macrobaenidae1 site
- Manchurochelys1 site
- Moqisaurus pulchrum1 site
- Nuominerpeton aquilonaris1 site
- Ornithopoda1 site
- Protopteryx fengningensis1 site
- Psittacosaurus1 site
- Pterodactyloidea1 site
- Zhangheotherium quinquecuspidens1 site
The Paleobiology Database records 6 sites for Peipiaosteus, 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
4 references- Stratigraphic sequence and vertebrate-bearing beds of the lower part of the Yixian Formation in Sihetun and neighboring area, western Liaoning, China3
- The exceptionally preserved Early Cretaceous “Moqi Fauna” from eastern Inner Mongolia, China, and its age relationship with the Jehol Biota1
- First avialan bird from China1
- Hou, 19971
Each of the 6 occurrences 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. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content2
Picture of Peipiaosteus
- Source
- Wikipedia/Commons
- Credit
- Seth.sorensen
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- 3D Fossils
- Licence
- CC Attribution-NonCommercial
- Commercial use
- the licence does not allow it
Smithsonian Open Access and MorphoSource were 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 itPeipiaosteidae through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Liu and Zhou 1965