Chlamydoselachidae

Chlamydoselachidae is a family of primitive deep-sea sharks in the order Hexanchiformes. They are one of only two extant families in the order alongside the cow sharks in the family Hexanchidae, and the only members of the suborder Chlamydoselachoidei.

Chlamydoselachidae

Ｋａｔｕｕｙａ · 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
HexanchiformesPBDB
Diet
carnivorePBDB, for Hexanchiformes
Life habit
nektonicPBDB, for Hexanchiformes
Motility
actively mobilePBDB, for Hexanchiformes

Time the record covers

At least 83 million years on record.

The record covers at least 85.7 Mya to 1.8 Mya. No occurrence read is dated outside 93.9 Mya to 774 ka.

Late Cretaceous — about 24 of 56 occurrencesLate CretaceousPaleocene — about 15 of 56 occurrencesPaleoceneEocene — about 5 of 56 occurrencesEoceneOligocene — about 1 of 56 occurrencesOligoceneMiocene — about 5 of 56 occurrencesMiocenePliocene — about 2 of 56 occurrencesPleistocene — about 4 of 56 occurrences96–93 Mya — about 0.2 occurrences93–89 Mya — about 0.4 occurrences89–86 Mya — about 0.4 occurrences86–83 Mya — about 6 occurrences83–80 Mya — about 3 occurrences80–77 Mya — about 3 occurrences77–73 Mya — about 3 occurrences73–70 Mya — about 3 occurrences70–67 Mya — about 4 occurrences67–64 Mya — about 7 occurrences64–61 Mya — about 7 occurrences61–57 Mya — about 1 occurrence57–54 Mya — about 1.0 occurrences54–51 Mya — about 0.8 occurrences51–48 Mya — about 0.8 occurrences48–45 Mya — about 0.9 occurrences45–41 Mya — about 0.9 occurrences41–38 Mya — about 0.1 occurrences38–35 Mya — about 0.7 occurrences35–32 Mya — about 0.6 occurrences32–29 Mya — about 0.5 occurrences29–26 Mya — about 0.2 occurrences22–19 Mya — about 0.3 occurrences19–16 Mya — about 0.7 occurrences16–13 Mya — about 3 occurrences13–9.6 Mya — about 0.7 occurrences9.6–6.4 Mya — about 0.4 occurrences6.4–3.2 Mya — about 1 occurrence3.2–0 Mya — about 5 occurrences85.7 Mya1.8 Mya96 Mya0 Mya

56 occurrences of Chlamydoselachidae on record, most of them in the Late Cretaceous. 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

56 occurrences

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

23 formations

Nierental — 47.66°N, 14.86°ENorthumberland — 49.55°N, 124.70°WNorthumberland — 49.54°N, 124.71°WHinoshima — 32.39°N, 130.40°EAzenotani — 34.37°N, 135.42°EAzenotani — 34.36°N, 135.32°EWaipara Greensand — 43.05°S, 172.62°EArgille Azzurre — 44.72°N, 10.08°EArgille Azzurre — 43.31°N, 11.49°ETakatika Grit — 43.75°S, 176.68°WSanta Marta — 63.90°S, 57.90°WByala — 42.88°N, 27.90°EMiretrain Marl — 43.57°N, 1.11°WAngostura — 0.88°N, 78.83°WAchen — 47.88°N, 12.27°EGerhartsreit — 47.94°N, 13.01°EOiching — 47.94°N, 13.01°EPeresheek Mountain — 58.58°N, 163.60°EGerhartsreit — 47.80°N, 12.62°ERødvig — 55.32°N, 12.44°EMenilitic — 49.64°N, 18.73°EMarnes de Miretrain — 43.69°N, 1.13°WLillebælt Clay — 55.60°N, 9.80°ECrescent — 47.59°N, 123.20°WIdozawa — 36.24°N, 138.90°EHaratajino — 36.31°N, 138.84°E

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The named rock units Chlamydoselachidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Chlamydoselachidae and its relatives

Late Cretaceous

Where Chlamydoselachidae and its relatives were recorded in the Late Cretaceous.

Found in the same rock

324 taxa

The Paleobiology Database records 45 sites for Chlamydoselachidae, 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

27 references

Each of the 56 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. 15 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 Chlamydoselachidae

Credit
Ｋａｔｕｕｙａ
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Chlamydoselachidae 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

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 itHexanchiformes through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Garman 1884