Tylocidaris

Tylocidaris is an extinct genus of sea urchins that lived from the Early Cretaceous to the Eocene. Its remains have been found in Europe and North America.

Tylocidaris

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
PsychocidaridaePBDB
Diet
grazer, omnivorePBDB, for Cidaroida
Life habit
low-level epifaunalPBDB, for Cidaroida
Motility
slow-movingPBDB, for Cidaroida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Cidaroida

Time the record covers

At least 100 million years on record.

The record covers at least 121.4 Mya to 20.45 Mya. No occurrence read is dated outside 125.77 Mya to 13.82 Mya.

Early Cretaceous — about 1 of 58 occurrencesEarly CretaceousLate Cretaceous — about 34 of 58 occurrencesLate CretaceousPaleocene — about 13 of 58 occurrencesPaleoceneEocene — about 2 of 58 occurrencesEoceneOligocene — about 0 of 58 occurrencesMiocene — about 8 of 58 occurrencesMiocene128–124 Mya — about 0.4 occurrences124–120 Mya — about 0.6 occurrences109–105 Mya — about 0.1 occurrences105–101 Mya — about 0.3 occurrences101–97 Mya — about 4 occurrences97–93 Mya — about 6 occurrences93–89 Mya — about 11 occurrences89–85 Mya — about 1 occurrence85–81 Mya — about 2 occurrences74–70 Mya — about 4 occurrences70–66 Mya — about 6 occurrences66–62 Mya — about 6 occurrences62–58 Mya — about 3 occurrences58–54 Mya — about 4 occurrences50–47 Mya — about 0.2 occurrences47–43 Mya — about 0.4 occurrences43–39 Mya — about 0.4 occurrences39–35 Mya — about 0.8 occurrences35–31 Mya — about 0.3 occurrences23–19 Mya — about 3 occurrences19–15 Mya — about 4 occurrences15–12 Mya — about 0.7 occurrences121.4 Mya20.45 Mya128 Mya12 Mya

58 occurrences of Tylocidaris 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

58 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

18 formations

Bilá — 49.98°N, 15.60°ECabo de Lata — 43.49°N, 3.79°WCabo de Lata — 42.84°N, 2.18°WVincentown — 39.97°N, 74.68°WVincentown — 39.88°N, 75.13°WVincentown — 39.93°N, 74.75°WVincentown — 39.80°N, 75.06°WPeruc-Korycany — 49.98°N, 15.60°EMaastricht — 50.85°N, 5.70°EMaastricht — 50.86°N, 5.79°EPantano — 44.27°N, 10.95°EPantano — 44.24°N, 11.00°EHouthem — 50.87°N, 5.78°ELewes Nodular Chalk — 50.70°N, 3.10°WWilmington Sands — 50.80°N, 0.18°ESalt Mountain Limestone — 31.43°N, 87.92°WJabaco — 22.31°N, 79.65°WLoma Candela — 22.12°N, 80.45°WGrizzle — 50.80°N, 0.18°ESärdal Beds — 56.75°N, 12.63°EOlazagutia — 42.88°N, 2.20°WRødvig — 56.97°N, 9.68°EBryozoan Limestone — 55.28°N, 12.45°ESan Marino — 43.93°N, 12.45°E

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The named rock units Tylocidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 occurrences have no formation on record, which is common for older literature.

Tylocidaris and its relatives

Late Cretaceous

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

Found in the same rock

780 taxa

The Paleobiology Database records 47 sites for Tylocidaris, 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

Each of the 58 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 Tylocidaris

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

No 3D scan of Tylocidaris 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 itPsychocidaridae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Pomel 1883