Coelacanthiformes
Coelacanths are an ancient group of lobe-finned fish (Sarcopterygii) in the class Actinistia. As sarcopterygians, they are more closely related to lungfish and tetrapods than to ray-finned fish. There is only a single living genus, Latimeria, with two described species.

Bruce A.S. Henderson · CC BY 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
- coelacanthPBDB
- Sits inside
- ActinistiaPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
Time the record covers
At least 310 million years on record.
The record covers at least 382.31 Mya to 72.2 Mya. No occurrence read is dated outside 393.47 Mya to 66 Mya.
305 occurrences of Coelacanthiformes on record, most of them in the Late Triassic. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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
305 occurrences- Devonian2%
- Carboniferous5%
- Permian5%
- Early Triassic17%
- Middle Triassic13%
- Late Triassic21%
- Early Jurassic7%
- Middle Jurassic3%
- Late Jurassic8%
- Early Cretaceous9%
- Late Cretaceous12%
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
110 formations
- Besano Formation20
- Kongressfjellet Formation18
- Lockatong Formation · Chatham Group16
- Chinle Formation13
- Kupferschiefer Formation8
- Bahariya Formation8
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The named rock units Coelacanthiformes has been recovered from, largest first. Drawn where the rock is now, not where it formed. 86 further formations hold fewer occurrences each and are not listed. 54 occurrences have no formation on record, which is common for older literature.
Coelacanthiformes and its relatives
Late TriassicWhere Coelacanthiformes and its relatives were recorded in the Late Triassic.
Found in the same rock
1,855 taxa- Coelacanthidae31 sites
- Semionotus20 sites
- Turseodus19 sites
- Lepidotes18 sites
- Reptilia18 sites
- Rieppelia heinzfurreri17 sites
- Actinopterygii16 sites
- Theropoda15 sites
- Osteichthyes14 sites
- Redfieldiidae14 sites
- Coelacanthus granulatus13 sites
- Mawsonia gigas13 sites
- Ostracoda13 sites
- Diplurus12 sites
- Crocodylia11 sites
- Hybodus10 sites
- Mawsonia10 sites
- Mawsoniidae10 sites
- Plantae10 sites
- Saurichthys10 sites
- Gastropoda9 sites
- Semionotidae9 sites
- Archosauriformes8 sites
- Crocodylomorpha8 sites
The Paleobiology Database records 263 sites for Coelacanthiformes, 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- Stensiö, 192122
- Early Mesozoic burst of morphological disparity in the slow‑evolving coelacanth fish lineage17
- Ergebnisse der Forschungsreisen Prof. E. Stromers in den Wüsten Ägyptens II. Wirbeltierreste der Baharije-Stufe (unterstes Cenoman) 16. Neue Untersuchungen an den Fischresten8
- The last known freshwater coelacanths: new Late Cretaceous mawsoniid remains (Osteichthyes: Actinistia) from southern France7
- Redfieldiid fishes from the Triassic-Liassic Newark Supergroup of eastern North America7
- New eastern American Triassic fishes and Triassic correlations6
- Catalogue of the Fossil Fishes in the British Museum (Natural History). Part II6
- A Fauna da Formação Brejo Santo, Neojurássico da Bacia do Araripe, Brasil: Interpretações Paleoambientais5
- A coelacanthid-rich site at Hasbergen (NW Germany): taphonomy and palaeoenvironment of a first systematic excavation in the Kupferschiefer (Upper Permian, Lopingian)5
- Fossil great lakes of the Newark Supergroup of New Jersey5
- Etude complémentaire des poissons de l'Eotrias de Madagascar5
- Coelacanth remains from the Late Jurassic–?earliest Cretaceous of Uruguay: the southernmost occurrence of the Mawsoniidae4
Each of the 305 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 content1
Picture of Coelacanthiformes
- Source
- Wikipedia/Commons
- Credit
- Bruce A.S. Henderson
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Coelacanthiformes 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.
The description on this site
- Source
- Wikipedia, “Coelacanth”
- 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 itActinistia through timeFormations of the Late TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Berg 1937