Cardabiodon fossil map
Where fossils of Cardabiodon have been found, shown on the Earth as it looked about 85 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 85 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →
| Group | Ancient fish & sharks |
|---|---|
| Lived | 100.5–83.6 million years ago (Cenomanian to Santonian) |
| Periods | Cretaceous |
| Family | Cardabiodontidae |
| Named by | Siverson 1999 |
| Fossil records | 16 occurrences at 13 locations (PBDB) |
| Found in | United States, Australia, Canada |
| Rock formations | Greenhorn Limestone, Kaskapau, Carlile Shale, txn:131697, Graneros Shale, Gearle Siltstone |
About Cardabiodon
Cardabiodon (; meaning 'Cardabia tooth') is an extinct genus of large mackerel shark that lived about 95 to 91 million years ago (Ma) during the Cenomanian to Turonian of the Late Cretaceous. It is a member of the Cardabiodontidae, a family unique among mackerel sharks due to differing dental structures, and contains the two species C. ricki and C. venator. Cardabiodon fossils have been found in Australia, North America, England, and Kazakhstan. It was likely an antitropical shark that inhabited temperate neritic and offshore oceans between 40° and 60° paleolatitude, similar to the modern porbeagle shark.
Text in “About” is quoted from the Wikipedia article Cardabiodon (revision 1344340405), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q5038223.
