Pygurus

Pygurus is an extinct genus of sea urchins.

Pygurus

Hectonichus · 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
ClypeidaePBDB
Diet
grazer, deposit feederPBDB, for Echinoidea
Life habit
epifaunalPBDB, for Echinoidea
Motility
actively mobilePBDB, for Echinoidea
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 64 million years on record.

The record covers at least 165.3 Mya to 100.5 Mya. No occurrence read is dated outside 170.9 Mya to 93.9 Mya.

Middle Jurassic — about 15 of 93 occurrencesMiddle JurassicLate Jurassic — about 14 of 93 occurrencesLate JurassicEarly Cretaceous — about 59 of 93 occurrencesEarly CretaceousLate Cretaceous — about 5 of 93 occurrencesLate Cretaceous172–170 Mya — about 0.2 occurrences170–167 Mya — about 0.5 occurrences167–164 Mya — about 4 occurrences164–162 Mya — about 10 occurrences162–159 Mya — about 2 occurrences159–156 Mya — about 1 occurrence156–154 Mya — about 3 occurrences154–151 Mya — about 5 occurrences151–148 Mya — about 3 occurrences146–143 Mya — about 1 occurrence143–140 Mya — about 1 occurrence140–138 Mya — about 1 occurrence138–135 Mya — about 9 occurrences135–132 Mya — about 12 occurrences132–130 Mya — about 11 occurrences130–127 Mya — about 11 occurrences127–124 Mya — about 6 occurrences124–122 Mya — about 1 occurrence122–119 Mya — about 1 occurrence119–116 Mya — about 2 occurrences116–114 Mya — about 2 occurrences114–111 Mya — about 0.3 occurrences108–106 Mya — about 0.1 occurrences106–103 Mya — about 0.7 occurrences103–100 Mya — about 0.7 occurrences100–98 Mya — about 2 occurrences98–95 Mya — about 2 occurrences95–92 Mya — about 0.8 occurrences165.3 Mya100.5 Mya172 Mya92 Mya

93 occurrences of Pygurus on record, most of them in the Early 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

93 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

Calcaires à spatangues — 48.54°N, 5.05°ECalcaires à spatangues — 48.30°N, 4.58°ECalcaires à spatangues — 48.08°N, 4.24°ECalcaires à spatangues — 47.94°N, 3.98°ECalcaires à spatangues — 47.84°N, 3.73°ECalcaires à spatangues — 47.80°N, 3.65°ECalcaires à spatangues — 47.33°N, 2.83°ECalcaires à spatangues — 47.40°N, 2.77°ECalcaires à spatangues — 47.70°N, 3.46°ECalcaires à spatangues — 47.68°N, 3.37°ECalcaires à spatangues — 47.62°N, 3.26°ECalcaires à spatangues — 47.57°N, 3.23°ECalcaires à spatangues — 47.55°N, 3.18°ECalcaires à spatangues — 47.53°N, 3.15°ECalcaires à spatangues — 47.50°N, 3.05°EDhruma — 24.23°N, 46.58°EDhruma — 25.05°N, 45.67°EDhruma — 25.37°N, 45.50°EDhruma — 25.97°N, 45.00°EMt. Lysa — 50.90°N, 21.67°EMt. Lysa — 51.26°N, 21.06°EMauddud — 25.90°N, 56.07°ETataouine — 33.00°N, 10.47°ETataouine — 32.00°N, 10.47°EHanifa — 24.52°N, 45.95°EHanifa — 24.83°N, 46.00°EHalal — 30.37°N, 34.45°EYamama — 24.04°N, 47.28°ESulaiy — 24.04°N, 47.28°EBuwaib — 25.25°N, 46.90°EBuwaib — 24.49°N, 47.32°EVuache — 46.83°N, 6.52°ECouche de Villers — 47.02°N, 6.92°ETuwaiq Mountain Limestone — 25.75°N, 45.17°EChari — 23.50°N, 70.50°EBaños del Flaco — 35.00°S, 70.42°WBahamite sequence — 53.77°N, 14.08°EMalone — 31.23°N, 105.55°WRisan Aneiza — 30.79°N, 33.48°E

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The named rock units Pygurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 39 occurrences have no formation on record, which is common for older literature.

Pygurus and its relatives

Early Cretaceous

Where Pygurus and its relatives were recorded in the Early Cretaceous.

Found in the same rock

583 taxa

The Paleobiology Database records 79 sites for Pygurus, 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

22 references

Each of the 93 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. 10 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 Pygurus

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

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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

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 itClypeidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Agassiz 1839