Pycnodontidae
Pycnodontidae is an extinct family of ray-finned fishes, ranging from the Jurassic period until the Late Eocene. It was the largest and most derived family of the successful Mesozoic fish order Pycnodontiformes, and one of only two families to survive into the Cenozoic.

User:Haplochromis · 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
- PycnodontiformesPBDB
- Diet
- durophage, carnivorePBDB, for Pycnodontiformes
- Life habit
- nektonicPBDB, for Pycnodontiformes
- Motility
- actively mobilePBDB, for Pycnodontiformes
Time the record covers
At least 165 million years on record.
The record covers at least 165.3 Mya to 129 ka. No occurrence read is dated outside 168.2 Mya to 11.7 ka.
474 occurrences of Pycnodontidae on record, most of them in the Late 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
474 occurrences- Middle Jurassic3%
- Late Jurassic7%
- Early Cretaceous25%
- Late Cretaceous49%
- Paleocene4%
- Eocene11%
- Pleistoceneunder 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
153 formations
- Paluxy Formation · Trinity Group15
- Greenhorn Limestone Formation · Colorado Group10
- Korallenkalk Formation9
- Carlile Shale Formation · Colorado Group8
- La Huérguina Formation8
- Akrabou Formation8
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The named rock units Pycnodontidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 129 further formations hold fewer occurrences each and are not listed. 144 occurrences have no formation on record, which is common for older literature.
Pycnodontidae and its relatives
Late CretaceousWhere Pycnodontidae and its relatives were recorded in the Late Cretaceous.
Found in the same rock
3,373 taxa- Pycnodus43 sites
- Lepidotes39 sites
- Crocodylia33 sites
- Hybodus31 sites
- Theropoda30 sites
- Testudines28 sites
- Stephanodus25 sites
- Anura24 sites
- Cretalamna appendiculata24 sites
- Squalicorax pristodontus19 sites
- Teleostei19 sites
- Enchodus18 sites
- Ischyrhiza mira18 sites
- Anomoeodus phaseolus17 sites
- Archaeolamna kopingensis17 sites
- Squalicorax kaupi17 sites
- Coelodus16 sites
- Pseudohypolophus mcnultyi16 sites
- Xiphactinus audax16 sites
- Amiidae15 sites
- Belonostomus15 sites
- Caturus15 sites
- Mosasauridae15 sites
- Squalicorax falcatus15 sites
The Paleobiology Database records 359 sites for Pycnodontidae, 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
242 references- Lower vertebrate faunas of the Trinity Division on north-central Texas16
- Jura Vaudois et Neuchatelois13
- New insight into pycnodontiform fishes11
- Fosilne ribe Komena, Mrzleka, Hvara i M. Libanona uz dodatak o Oligocenskim ribama Tüffera, Zagora i Trifalja10
- Stratigraphy and Paleobiology of the Upper Cretaceous - Lower Paleogene Sediments from the Trans-Saharan Seaway in Mali9
- Catalogue of the Fossil Fishes in the British Museum (Natural History), Part III9
- Ueber die im Korallenkalk des Lindner Berges bei Hannover vorkommenden Ueberreste von Fischen, mit Beschreibung und Abbildung einiger neuen Arten [On the remains of fishes occurring in the Coral Chalk of Lindner Mountain in Hannover, with description and images of some new forms]9
- The English Chalk and London Clay: two remarkable British bony fish Lagerstatten7
- Late Cretaceous (Campanian) actinopterygian fishes from the Kristianstad Basin of southern Sweden7
- Nursallia tethysensis sp. nov., a new pycnodont fish (Neopterygii: †Halecostomi) from the Cenomanian of Lebanon7
- The Umm Himar Formation (Paleocene) of Saudi Arabia and Associated Strata: Stratigraphy, Vertebrate Fauna, and Paleoenvironment7
- Vertebrate fauna from the infra- and inter-trappean beds of Andhra Pradesh: age implications7
Each of the 474 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. 230 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 Pycnodontidae
- Source
- Wikipedia/Commons
- Credit
- User:Haplochromis
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
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 itPycnodontiformes through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Agassiz 1833)