Pseudodalatias

Pseudodalatias is an extinct genus of cartilaginous fish which existed in England, Italy and Spain during the Triassic period. It is placed in the monotypic family Pseudodalatiidae, and contains the two species Pseudodalatias barnstonensis and Pseudodalatias henarejensis. It is disputed as to whether it represents a neoselachian, or a hybodont.

Pseudodalatias

Ghedoghedo · CC BY-SA 4.0 · 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
PseudodalatiidaePBDB
Diet
carnivorePBDB, for Chondrichthyes
Life habit
nektonicPBDB, for Chondrichthyes
Motility
actively mobilePBDB, for Chondrichthyes

Time the record covers

At least 33 million years on record.

The record covers at least 239.48 Mya to 205.7 Mya. No occurrence read is dated outside 241.464 Mya to 199.5 Mya.

Middle Triassic — about 15 of 44 occurrencesMiddle TriassicLate Triassic — about 28 of 44 occurrencesLate TriassicEarly Jurassic — about 1 of 44 occurrences242–241 Mya — about 0.3 occurrences241–239 Mya — about 1 occurrence239–238 Mya — about 8 occurrences238–236 Mya — about 5 occurrences228–226 Mya — about 0.0 occurrences226–225 Mya — about 0.1 occurrences225–223 Mya — about 0.1 occurrences223–222 Mya — about 0.1 occurrences222–220 Mya — about 0.1 occurrences220–219 Mya — about 0.1 occurrences219–218 Mya — about 0.1 occurrences218–216 Mya — about 0.1 occurrences216–215 Mya — about 1 occurrence215–213 Mya — about 2 occurrences213–212 Mya — about 2 occurrences212–210 Mya — about 1 occurrence210–209 Mya — about 0.3 occurrences209–207 Mya — about 0.3 occurrences207–206 Mya — about 0.3 occurrences206–204 Mya — about 6 occurrences204–203 Mya — about 7 occurrences203–202 Mya — about 7 occurrences202–200 Mya — about 1 occurrence200–199 Mya — about 0.2 occurrences239.48 Mya205.7 Mya242.3 Mya198.7 Mya

44 occurrences of Pseudodalatias on record, most of them in the Late Triassic. 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

44 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

10 formations

Cañete — 39.87°N, 1.48°WCañete — 39.61°N, 0.77°WCañete — 39.91°N, 1.37°WCañete — 39.38°N, 0.78°WWestbury — 52.91°N, 0.90°WWestbury — 51.60°N, 2.63°WWestbury — 50.78°N, 2.99°WWestbury — 52.75°N, 1.15°WWestbury — 51.21°N, 3.44°WWestbury — 53.40°N, 0.78°WCalcare di Zorzino — 45.82°N, 9.60°ECalcare di Zorzino — 45.78°N, 9.81°EGrès de Mortinsart — 49.70°N, 5.66°EGrès de Mortinsart — 49.75°N, 5.79°EGrès de Boisset — 46.91°N, 5.90°EDolomia di Forni — 46.39°N, 12.93°EZorzino Limestone — 45.78°N, 9.82°ERiva di Solto — 45.82°N, 9.60°ESables de Mortinsart — 49.71°N, 5.62°EUpper Muschelkalk — 41.04°N, 0.75°E

Loading coastlines…

The named rock units Pseudodalatias has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Pseudodalatias and its relatives

Late Triassic

Where Pseudodalatias and its relatives were recorded in the Late Triassic.

Found in the same rock

145 taxa

The Paleobiology Database records 44 sites for Pseudodalatias, 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

17 references

Each of the 44 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. 5 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 Pseudodalatias

Credit
Ghedoghedo
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Pseudodalatias 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 itPseudodalatiidae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Reif 1978