Nebrius
Nebrius is a genus of carpet sharks in the family Ginglymostomatidae.

David Burdick · Public Domain · 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
- GinglymostomatidaePBDB
- Diet
- carnivorePBDB, for Orectolobiformes
- Life habit
- nektobenthicPBDB, for Orectolobiformes
- Motility
- actively mobilePBDB, for Orectolobiformes
Time the record covers
At least 54 million years on record.
The record covers at least 66 Mya to 11.63 Mya. No occurrence read is dated outside 83.6 Mya to 5.333 Mya.
98 occurrences of Nebrius on record, most of them in the Eocene. 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
98 occurrences- Late Cretaceous3%
- Paleocene11%
- Eocene62%
- Oligocene4%
- Miocene19%
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
50 formations
- Pirabas Formation9
- Tallahatta Formation · Claiborne Group5
- Landana Formation4
- Cantaure Formation3
- Midawara Formation · Wadi Rayan Group3
- Birket Qarun Formation3
Loading coastlines…
The named rock units Nebrius has been recovered from, largest first. Drawn where the rock is now, not where it formed. 26 further formations hold fewer occurrences each and are not listed. 18 occurrences have no formation on record, which is common for older literature.
Nebrius and its relatives
EoceneWhere Nebrius and its relatives were recorded in the Eocene.
Found in the same rock
1,504 taxa- Rhinoptera36 sites
- Myliobatis34 sites
- Dasyatis29 sites
- Physogaleus secundus29 sites
- Rhizoprionodon25 sites
- Striatolamia macrota23 sites
- Pristis21 sites
- Carcharhinus20 sites
- Abdounia beaugei19 sites
- Aetomylaeus18 sites
- Brachycarcharias lerichei18 sites
- Rhinobatos18 sites
- Hemipristis serra17 sites
- Hypotodus verticalis16 sites
- Rhizoprionodon ganntourensis16 sites
- Rhynchobatus16 sites
- Sphyraena16 sites
- Coupatezia15 sites
- Abdounia14 sites
- Aetobatus14 sites
- Pristis lathami14 sites
- Scyliorhinus14 sites
- Anoxypristis13 sites
- Burnhamia daviesi13 sites
The Paleobiology Database records 89 sites for Nebrius, 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
53 references- Les Orectolobiformes, Carcharhiniformes et Myliobatiformes (Elasmobranchii, Neoselachii) des bassins à phosphate du Maroc (Maastrichtien-Lutétien basal). Systématique, biostratigraphie, évolution et dynamique des faunes11
- Neogene sharks and rays from the Brazilian 'Blue Amazon'9
- Shark and ray faunas in the Middle and Late Eocene of the Fayum Area, Egypt7
- Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths6
- Les poissons fossiles du Bas-Congo et des régions voisines5
- The selachian fauna (sharks and rays) of the phosphate series of Ndendouri-Ouali Diala (Matam, Western Senegal): Dating and paleoenvironmental interests3
- The Selsey Division (Bracklesham Group) at Lee-on-the-Solent, Gosport, (Hants)3
- Sharks and rays from the Mokattamian Stage (middle and late Eocene) of Egypt, including some species from the middle Eocene Midra Shale of Qatar2
- Late Eocene (Priabonian) elasmobranchs from the Dry Branch Formation (Barnwell Group) of Aiken County, South Carolina, USA2
- A selachian fauna from the middle Eocene (Lutetian, Lisbon Formation) of Andalusia, Covington County, Alabama, USA2
- A new Early Miocene (Aquitanian) Elasmobranchii assemblage from the la Guajira Peninsula, Colombia2
- A Middle–Late Eocene vertebrate fauna (marine fish and mammals) from southwestern Morocco; preliminary report: age and palaeobiogeographical implications2
Each of the 98 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. 41 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 Nebrius
- Source
- Wikipedia/Commons
- Credit
- David Burdick
- Licence
- Public Domain
- 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
- Crotaphytus nebrius · UCM:Herp:UCM:Herp:65810
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
- Source
- Wikipedia, “Nebrius”
- 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 itGinglymostomatidae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Rüppell 1837