Chondrichthyes
Searched as Chondrichthyes indet.. The Paleobiology Database treats Chondrichthyes as the accepted name.
Chondrichthyes is a class of jawed fish that contains the cartilaginous fish or chondrichthyans, which all have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or bony fish, which have skeletons primarily composed of bone tissue. Chondrichthyes are aquatic vertebrates with paired fins, paired nares, placoid scales, and conus arteriosus in the heart. Within the infraphylum Gnathostomata, cartilaginous fishes are distinct from all other jawed vertebrates.

Prehistoricplanes · CC BY-SA 4.0 · 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- Also called
- cartilaginous fishPBDB
- Sits inside
- GnathostomataPBDB
- Diet
- carnivorePBDB
- Life habit
- nektonicPBDB
- Motility
- actively mobilePBDB
Time the record covers
At least 432 million years on record.
The record covers at least 432.9 Mya to 11.7 ka. No occurrence read is dated outside 438.6 Mya to 0 Mya.
275 occurrences of Chondrichthyes 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
275 occurrences- Silurianunder 1%
- Devonian5%
- Carboniferous9%
- Permian3%
- Early Triassic1%
- Middle Triassicunder 1%
- Late Triassic5%
- Early Jurassic1%
- Middle Jurassic2%
- Late Jurassic1%
- Early Cretaceous1%
- Late Cretaceous19%
- Paleocene4%
- Eocene18%
- Oligocene6%
- Miocene14%
- Pliocene5%
- 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
142 formations
- Aguja Formation9
- Lisbon Formation · Claiborne Group9
- Chinle Formation6
- Vaqueros Formation6
- Keasey Formation5
- Tallahatta Formation · Claiborne Group5
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The named rock units Chondrichthyes has been recovered from, largest first. Drawn where the rock is now, not where it formed. 118 further formations hold fewer occurrences each and are not listed. 49 occurrences have no formation on record, which is common for older literature.
Chondrichthyes and its relatives
Late CretaceousWhere Chondrichthyes and its relatives were recorded in the Late Cretaceous.
Found in the same rock
3,471 taxa- Teleostei28 sites
- Theropoda25 sites
- Osteichthyes24 sites
- Crocodylia22 sites
- Amiidae21 sites
- Paralbula casei19 sites
- Anura18 sites
- Crinoidea18 sites
- Lepisosteus18 sites
- Myledaphus bipartitus18 sites
- Trionychidae18 sites
- Dasyatis africana17 sites
- Scapherpeton tectum17 sites
- Spirifer17 sites
- Belonostomus longirostris16 sites
- Bivalvia16 sites
- Equus16 sites
- Hydrocynus16 sites
- Lepisosteus occidentalis16 sites
- Sindacharax sp.16 sites
- Turritella16 sites
- Acipenser albertensis15 sites
- Champsosaurus natator15 sites
- Holmesella15 sites
The Paleobiology Database records at least 625 sites for Chondrichthyes, and this reads 240 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
173 references- Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region18
- The Vaqueros Formation, Lower Miocene of California. I. Paleontology6
- Unbalanced food web in a Late Cretaceous dinosaur assemblage5
- Vertebrate paleoecology from microsites, Talley Mountain, Upper Aguja Formation (Late Cretaceous), Big Bend National Park, Texas, USA5
- Late Devonian - Early Permian chondrichthyans of the Russian Arctic5
- Stratigraphic revision of Campanian (Upper Cretaceous) rocks in the Henry Basin, Utah5
- Sharks' teeth and cetacean bones5
- Permian chondrichthyans from the Guadalupe Mountains National Park of West Texas (USA)4
- Assessing diversity and paleoecology of a Middle Jurassic microvertebrate assemblage from Madagascar4
- Exceptional crinoid occurrences and associated carbonates of the Keasey Formation (Early Oligocene) at Mist, Oregon, USA4
- New turtle remains from the Late Cretaceous and Paleogene of Volgograd Region, Russia4
- Testing for patterns of faunal persistence in the early Oligocene Byram Formation of Mississippi4
Each of the 275 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. 161 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 content2
Picture of Chondrichthyes
- Source
- Wikipedia/Commons
- Credit
- Prehistoricplanes
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Chondrichthyes indet. · fmnh:pf:15270
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 itGnathostomata through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Huxley 1880