Gresslya gregaria

No picture of Gresslya gregaria was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Gresslya gregaria, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
GresslyaPBDB
Diet
suspension feederPBDB, for Bivalvia
Life habit
deep infaunalPBDB, for Gresslya
Motility
facultatively mobilePBDB, for Bivalvia
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 5.6 million years on record.

The record covers at least 170.9 Mya to 165.3 Mya. No occurrence read is dated outside 180.4 Mya to 161.5 Mya.

Early Jurassic — about 1 of 16 occurrencesEarly JurassicMiddle Jurassic — about 15 of 16 occurrencesMiddle JurassicLate Jurassic — about 0 of 16 occurrences181–180 Mya — about 0.0 occurrences180–180 Mya — about 0.1 occurrences180–179 Mya — about 0.1 occurrences179–178 Mya — about 0.1 occurrences178–178 Mya — about 0.1 occurrences178–177 Mya — about 0.1 occurrences177–176 Mya — about 0.1 occurrences176–176 Mya — about 0.1 occurrences176–175 Mya — about 0.1 occurrences175–174 Mya — about 0.1 occurrences174–174 Mya — about 0.1 occurrences174–173 Mya — about 0.1 occurrences173–172 Mya — about 0.1 occurrences172–172 Mya — about 0.1 occurrences172–171 Mya — about 0.1 occurrences171–170 Mya — about 0.3 occurrences170–170 Mya — about 0.3 occurrences170–169 Mya — about 0.3 occurrences169–168 Mya — about 0.9 occurrences168–168 Mya — about 0.6 occurrences168–167 Mya — about 0.5 occurrences167–166 Mya — about 0.5 occurrences166–166 Mya — about 0.5 occurrences166–165 Mya — about 1 occurrence165–164 Mya — about 2 occurrences164–164 Mya — about 2 occurrences164–163 Mya — about 2 occurrences163–162 Mya — about 2 occurrences162–162 Mya — about 2 occurrences162–161 Mya — about 0.5 occurrences170.9 Mya165.3 Mya180.9 Mya161 Mya

16 occurrences of Gresslya gregaria on record, most of them in the Middle 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

16 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

3 formations

Dhruma — 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°EBraunjura alpha & Braunjura beta — 48.90°N, 7.67°ETres Cruces — 30.94°S, 70.53°W

Loading coastlines…

The named rock units Gresslya gregaria has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Gresslya gregaria and its relatives

Middle Jurassic

Where Gresslya gregaria and its relatives were recorded in the Middle Jurassic.

Found in the same rock

181 taxa

The Paleobiology Database records 13 sites for Gresslya gregaria, 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

4 references

Each of the 16 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content0

No picture of Gresslya gregaria was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Gresslya gregaria, or no answer at all. This entry cannot say which.

No 3D scan of Gresslya gregaria 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.

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

Keep going

What may have been alongside itGresslya through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (von Zieten 1833)