Notidanodon
Notidanodon is an extinct genus of cow shark. Fossils ascribed to this genus are known from the Jurassic and Cretaceous periods. Recently, the genus underwent a major revision and was split into two after the erection of Xampylodon to accommodate the species X. dentatus, X. loozi, and X. brotzeni. The genus is now known only from New Zealand, Antarctica, Africa, and South America.

FunkMonk · CC BY-SA 3.0 · 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
- HexanchidaePBDB
- Diet
- carnivorePBDB, for Hexanchiformes
- Life habit
- nektonicPBDB, for Hexanchiformes
- Motility
- actively mobilePBDB, for Hexanchiformes
Time the record covers
At least 64 million years on record.
The record covers at least 125.77 Mya to 61.66 Mya. No occurrence read is dated outside 132.6 Mya to 56 Mya.
37 occurrences of Notidanodon 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
37 occurrencesThese 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
13 formations
- López de Bertodano Formation4
- Santa Marta Formation3
- Snow Hill Island Formation · Marambio Group2
- Waipara Greensand Formation2
- Hinoshima Formation · Himenoura Group2
- Northumberland Formation · Nanaimo Group2
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The named rock units Notidanodon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 occurrences have no formation on record, which is common for older literature.
Notidanodon and its relatives
Late CretaceousWhere Notidanodon and its relatives were recorded in the Late Cretaceous.
Found in the same rock
192 taxa- Elasmobranchii7 sites
- Paraorthacodus6 sites
- Lamniformes5 sites
- Hexanchus microdon4 sites
- Scapanorhynchus4 sites
- Sphenodus lundgreni4 sites
- Squatina4 sites
- Centroscymnus3 sites
- Cretalamna3 sites
- Cretalamna appendiculata3 sites
- Squalus vondermarcki3 sites
- Bivalvia2 sites
- Carcharias2 sites
- Carcharias dominguei2 sites
- Carcharias gracilis2 sites
- Centrophorus2 sites
- Centrosqualus mustardi2 sites
- Chlamydoselachus balli2 sites
- Crassescyliorhinus germanicus2 sites
- Cretolamna appendiculata appendiculata2 sites
- Dykeius garethi2 sites
- Echinorhinus2 sites
- Enchodus2 sites
- Eoetmopterus supracretaceus2 sites
The Paleobiology Database records 36 sites for Notidanodon, 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
21 references- Hexanchid shark teeth (Neoselachii, Vertebrata) from the Lower Cretaceous of Germany and England5
- A shark fauna from the Campanian of Hornby Island, British Columbia, Canada: an insight into the diversity of Cretaceous deep-water assemblages4
- Cow sharks (Hexanchiformes) from the Cretaceous deposits of the Crimea3
- Features and paleoecological significance of the shark fauna from the Upper Cretaceous Hinoshima Formation, Himenoura Group, southwest Japan2
- An early Cenozoic neoselachian shark fauna from the South Pacific2
- Sélaciens du Crétacé (Albien-Maastrichtien) d'Angola2
- Late Mesozoic and Cenozoic fish faunas of Japan2
- Fish remains from the Santa Marta Formation (Late Cretaceous) of James Ross Island, Antarctica2
- A record of Notidanodon pectinatus (Chondrichthyes, Hexanchiformes) in the Upper Cretaceous of the Antarctic Peninsula2
- Cretaceous fossil elasmobranchs from Japan2
- Late Mesozoic marine Antarctic fishes: future perspectives based on the newly collections recovered in the Ameghino and López de Bertodano Formations1
- New selachian records from the Upper Cretaceous of southern Patagonia: paleobiogeographical implications and the description of a new taxon1
Each of the 37 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. 9 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 Notidanodon
- Source
- Wikidata/Commons
- Credit
- FunkMonk
- 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
- Source
- Wikipedia, “Notidanodon”
- 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 itHexanchidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Cappetta 1975