Tetraditryma

No picture of Tetraditryma was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tetraditryma, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
HagiastridaePBDB

Time the record covers

At least 39 million years on record.

The record covers at least 182.9 Mya to 143.1 Mya. No occurrence read is dated outside 184.2 Mya to 137.05 Mya.

Early Jurassic — about 6 of 104 occurrencesEarly JurassicMiddle Jurassic — about 64 of 104 occurrencesMiddle JurassicLate Jurassic — about 32 of 104 occurrencesLate JurassicEarly Cretaceous — about 3 of 104 occurrencesEarly Cretaceous185–184 Mya — about 2 occurrences184–182 Mya — about 2 occurrences182–180 Mya — about 0.4 occurrences180–179 Mya — about 0.2 occurrences179–177 Mya — about 0.2 occurrences177–175 Mya — about 0.2 occurrences175–174 Mya — about 3 occurrences174–172 Mya — about 5 occurrences172–170 Mya — about 5 occurrences170–169 Mya — about 6 occurrences169–167 Mya — about 18 occurrences167–166 Mya — about 12 occurrences166–164 Mya — about 6 occurrences164–162 Mya — about 5 occurrences162–161 Mya — about 4 occurrences161–159 Mya — about 3 occurrences159–157 Mya — about 2 occurrences157–156 Mya — about 2 occurrences156–154 Mya — about 2 occurrences154–152 Mya — about 2 occurrences152–151 Mya — about 1 occurrence151–149 Mya — about 1 occurrence149–148 Mya — about 6 occurrences148–146 Mya — about 6 occurrences146–144 Mya — about 4 occurrences144–143 Mya — about 2 occurrences143–141 Mya — about 0.7 occurrences141–139 Mya — about 0.7 occurrences139–138 Mya — about 0.7 occurrences138–136 Mya — about 0.3 occurrences182.9 Mya143.1 Mya185.1 Mya136.1 Mya

104 occurrences of Tetraditryma 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

104 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

27 formations

Josephine — 41.87°N, 123.83°WTaman — 21.28°N, 98.82°WSnowshoe — 44.13°N, 119.12°WSnowshoe — 44.13°N, 118.97°WUnit 2 — 35.05°N, 120.17°WGuwayza — 22.96°N, 57.68°EGuwayza — 22.89°N, 57.74°EGuwayza — 22.74°N, 57.26°EWahrah — 22.97°N, 57.06°EWahrah — 22.74°N, 57.26°EUnit 1 — 35.05°N, 120.17°WFonzaso — 46.05°N, 11.88°ESoccher — 46.19°N, 12.30°EAnchorage — 62.60°S, 61.17°WCzajakowa Radiolarite — 49.37°N, 20.62°ECzajakowa Radiolarite — 49.17°N, 21.02°EMonte Alpe Cherts — 44.37°N, 9.43°EGraham Island — 53.40°N, 132.27°WCalcare Selcifero di Fonzaso — 46.02°N, 11.75°ESid'r — 22.82°N, 56.89°ESid'r — 22.89°N, 57.74°ECamarena — 37.57°N, 3.50°WRosso ad Aptici — 45.90°N, 9.00°ERosso ad Aptici — 45.88°N, 8.64°EAptychus Beds — 47.67°N, 12.90°EOberalmer Schichten — 47.73°N, 13.03°ERosso Ammonitico Medio — 38.03°N, 12.78°EPhantom Creek — 53.42°N, 132.26°WZindan Radiolarite — 37.82°N, 30.93°EKaramba — 34.32°N, 76.23°E

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The named rock units Tetraditryma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 further formations hold fewer occurrences each and are not listed. 32 occurrences have no formation on record, which is common for older literature.

Tetraditryma and its relatives

Middle Jurassic

Where Tetraditryma and its relatives were recorded in the Middle Jurassic.

Found in the same rock

870 taxa

The Paleobiology Database records 67 sites for Tetraditryma, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

31 references

Each of the 104 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. 19 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 content0

No picture of Tetraditryma was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

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

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. Baumgartner 1980