Chimaeroidei

Linda Snook / MBNMS · Public Domain · via Wikidata/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
- ChimaeriformesPBDB
- Diet
- carnivorePBDB, for Chimaeriformes
- Life habit
- nektobenthicPBDB, for Chimaeriformes
- Motility
- actively mobilePBDB, for Chimaeriformes
Time the record covers
At least 306 million years on record.
The record covers at least 307 Mya to 11.7 ka. No occurrence read is dated outside 315.2 Mya to 0 Mya.
144 occurrences of Chimaeroidei on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group. 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
144 occurrences- Carboniferousunder 1%
- Late Triassicunder 1%
- Early Jurassic2%
- Middle Jurassic4%
- Late Jurassic1%
- Early Cretaceous4%
- Late Cretaceous43%
- Paleocene11%
- Eocene14%
- Oligocene5%
- Miocene8%
- Pliocene3%
- Pleistocene3%
- Holoceneunder 1%
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
54 formations
- Hornerstown Formation · Rancocas Group12
- Masuk Formation12
- Selsey Formation · Bracklesham Group7
- Black Rock Sandstone Formation6
- Rybushka Formation6
- Horcón Formation5
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The named rock units Chimaeroidei has been recovered from, largest first. Drawn where the rock is now, not where it formed. 30 further formations hold fewer occurrences each and are not listed. 35 occurrences have no formation on record, which is common for older literature.
Chimaeroidei and its relatives
Late CretaceousWhere Chimaeroidei and its relatives were recorded in the Late Cretaceous.
Found in the same rock
1,948 taxa- Edaphodon24 sites
- Chimaeridae23 sites
- Squatina15 sites
- Chondrichthyes13 sites
- Squatina prima13 sites
- Aetomylaeus dixoni11 sites
- Callorhinchus11 sites
- Carcharias11 sites
- Myliobatis11 sites
- Odontaspis winkleri11 sites
- Premontreia (Oxyscyllium) gilberti11 sites
- Scyliorhinus11 sites
- Squalus minor11 sites
- Teleostei11 sites
- Heterodontus10 sites
- Rhinoptera10 sites
- Aves9 sites
- Elasmosauridae9 sites
- Enchodus9 sites
- Hypotodus verticalis9 sites
- Physogaleus secundus9 sites
- Carcharias hopei8 sites
- Carcharodon hastalis8 sites
- Crocodylia8 sites
The Paleobiology Database records 118 sites for Chimaeroidei, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
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
85 references- Stratigraphic revision of Campanian (Upper Cretaceous) rocks in the Henry Basin, Utah12
- The Selsey Division (Bracklesham Group) at Lee-on-the-Solent, Gosport, (Hants)8
- Catalogue of the Fossil Fishes in the British Museum (Natural History). Part II6
- Condrictios fósiles del Plioceno Superior de la Formación Horcón, Región de Valparaíso, Chile central5
- Paleocene chimaeroid fishes (Chondrichthyes: Holocephali) from the eastern United States, including two new species of Callorhinchus4
- A review of the Tertiary fossil Cetacea (Mammalia) localities in Australia4
- The vertebrate fauna of the Selma Formation of Alabama, part VIII, the fishes4
- Description of some extinct fishes previously unknown4
- Review of two marine vertebrate assemblages from the Arauco Basin (central Chile) reveals diversity changes throughout the Maastrichtian3
- New turtle remains from the Late Cretaceous and Paleogene of Volgograd Region, Russia3
- Contribution à l'étude des élasmobranches du Thanétien (Paléocène) du Bassin de Paris. 1. Découverte d'une faune d'elasmobranches dans la partie supérieure des Sables de Bracheux (Thanétien, Paléocène du Bassin de Paris) des régions de Compiègne (Oise) et de Montdidier (Somme)3
- Polar records of chimaeroid fishes (Holocephali, Chimaeroidei) from the Upper Cretaceous of eastern Siberia2
Each of the 144 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. 73 further references are not listed. 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 content1

Picture of Chimaeroidei
- Source
- Wikidata/Commons
- Credit
- Linda Snook / MBNMS
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Chimaeroidei was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itChimaeriformes through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.