Gresslya

Gresslya

via iDigBio · CC BY-NC-ND · via iDigBio. 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
CeratomyidaePBDB
Diet
suspension feederPBDB, for Bivalvia
Life habit
deep infaunalPBDB
Motility
facultatively mobilePBDB, for Bivalvia
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 102 million years on record.

The record covers at least 241.464 Mya to 139.1 Mya. No occurrence read is dated outside 247 Mya to 132.6 Mya.

Early Triassic — about 0 of 191 occurrencesMiddle Triassic — about 15 of 191 occurrencesMiddle TriassicLate Triassic — about 1 of 191 occurrencesLate TriassicEarly Jurassic — about 125 of 191 occurrencesEarly JurassicMiddle Jurassic — about 41 of 191 occurrencesMiddle JurassicLate Jurassic — about 8 of 191 occurrencesLate JurassicEarly Cretaceous — about 1 of 191 occurrencesEarly Cretaceous249–245 Mya — about 4 occurrences245–241 Mya — about 10 occurrences241–237 Mya — about 0.8 occurrences237–233 Mya — about 0.2 occurrences229–225 Mya — about 0.1 occurrences225–222 Mya — about 0.2 occurrences222–218 Mya — about 0.2 occurrences218–214 Mya — about 0.2 occurrences214–210 Mya — about 0.2 occurrences210–206 Mya — about 0.2 occurrences206–202 Mya — about 0.2 occurrences202–198 Mya — about 4 occurrences198–194 Mya — about 9 occurrences194–190 Mya — about 24 occurrences190–186 Mya — about 28 occurrences186–182 Mya — about 31 occurrences182–178 Mya — about 18 occurrences178–174 Mya — about 14 occurrences174–170 Mya — about 10 occurrences170–166 Mya — about 13 occurrences166–162 Mya — about 14 occurrences162–158 Mya — about 4 occurrences158–154 Mya — about 3 occurrences154–150 Mya — about 1 occurrence150–146 Mya — about 0.2 occurrences142–138 Mya — about 0.1 occurrences138–134 Mya — about 0.6 occurrences134–130 Mya — about 0.3 occurrences241.464 Mya139.1 Mya249 Mya130 Mya

191 occurrences of Gresslya on record, most of them in the Early Jurassic. 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

191 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

34 formations

Whitby Mudstone — 54.45°N, 0.57°WDhruma — 22.50°N, 46.00°EDhruma — 21.88°N, 45.67°EDhruma — 25.05°N, 45.67°EDhruma — 25.37°N, 45.50°EDhruma — 25.70°N, 45.67°EDhruma — 25.78°N, 45.25°EDhruma — 25.97°N, 45.00°EDhruma — 26.20°N, 44.83°EDhruma — 26.33°N, 44.83°EUlakhan-Krest — 71.75°N, 127.75°EUlakhan-Krest — 72.95°N, 121.70°EUlakhan-Krest — 72.60°N, 124.30°EUlakhan-Krest — 71.80°N, 127.24°EUlakhan-Krest — 71.74°N, 127.82°EAmaltheenton — 49.79°N, 11.04°EAmaltheenton — 52.06°N, 8.33°EAmaltheenton — 52.15°N, 7.51°ECleveland Ironstone — 54.45°N, 0.57°WCape Stewart — 70.45°N, 22.65°WCape Stewart — 70.44°N, 22.65°WCape Stewart — 70.47°N, 22.36°WCape Stewart — 70.46°N, 22.33°WCalcaires marneux inferieurs — 49.83°N, 4.20°ECalcaires marneux inferieurs — 49.88°N, 4.09°ECalcaires marneux inferieurs — 49.63°N, 4.92°ECalcaires marneux inferieurs — 49.60°N, 4.96°EBarahona Limestone — 40.67°N, 1.20°WDogger — 54.42°N, 0.93°WDogger — 54.50°N, 0.69°WBraunjura alpha & Braunjura beta — 48.90°N, 7.67°ECape Stewart Beds — 70.44°N, 22.64°WCape Stewart Beds — 70.46°N, 22.71°WLautaro — 29.01°S, 70.20°WLautaro — 29.36°S, 70.19°WLautaro — 29.43°S, 70.13°WOzirovo — 42.77°N, 24.71°EAberhan Pliensbach — 33.47°S, 70.75°WWhite Limestone — 51.75°N, 1.17°WInklin — 59.33°N, 133.75°WTrigonia clavellata — 50.80°N, 2.28°WCoralline Oolite — 54.21°N, 0.29°WMiddle Calcareous Grit — 54.21°N, 0.29°WNothe Grits — 50.80°N, 2.28°WAberhan Toarc — 33.47°S, 70.75°WManuel Creek — 68.03°N, 136.45°WSierra Santa Rosa — 30.72°N, 112.55°WDunlap — 38.48°N, 118.35°W

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The named rock units Gresslya has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 further formations hold fewer occurrences each and are not listed. 81 occurrences have no formation on record, which is common for older literature.

Gresslya and its relatives

Early Jurassic

Where Gresslya and its relatives were recorded in the Early Jurassic.

Found in the same rock

803 taxa

The Paleobiology Database records 156 sites for Gresslya, 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

42 references

Each of the 191 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. 30 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 Gresslya

Source
iDigBio
Credit
via iDigBio
Licence
CC BY-NC-ND
Commercial use
the licence does not allow it

No 3D scan of Gresslya was found in MorphoSource and Sketchfab.

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itCeratomyidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Agassiz 1843