Trochonema retrorsum

No picture of Trochonema retrorsum was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Trochonema retrorsum, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
TrochonemaPBDB
Diet
detritivorePBDB, for Murchisoniina
Life habit
epifaunalPBDB, for Murchisoniina
Motility
slow-movingPBDB, for Murchisoniina
Vision
limitedPBDB, for Murchisoniina
Environment
coastal,marinePBDB, for Murchisoniina

Time the record covers

At most 12 million years on record.

Every occurrence read is dated to somewhere between 457.3 Mya and 445.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 11 of 11 occurrencesOrdovician457–457 Mya — about 0.5 occurrences457–457 Mya — about 0.6 occurrences457–456 Mya — about 0.6 occurrences456–456 Mya — about 0.6 occurrences456–455 Mya — about 0.6 occurrences455–455 Mya — about 0.6 occurrences455–454 Mya — about 0.6 occurrences454–454 Mya — about 0.6 occurrences454–454 Mya — about 0.6 occurrences454–453 Mya — about 0.6 occurrences453–453 Mya — about 0.6 occurrences453–452 Mya — about 0.6 occurrences452–452 Mya — about 0.6 occurrences452–451 Mya — about 0.6 occurrences451–451 Mya — about 0.6 occurrences451–451 Mya — about 0.6 occurrences451–450 Mya — about 0.6 occurrences450–450 Mya — about 0.6 occurrences450–449 Mya — about 0.2 occurrences449–449 Mya — about 0.1 occurrences449–448 Mya — about 0.1 occurrences448–448 Mya — about 0.1 occurrences448–448 Mya — about 0.1 occurrences448–447 Mya — about 0.1 occurrences447–447 Mya — about 0.1 occurrences447–446 Mya — about 0.1 occurrences446–446 Mya — about 0.1 occurrences446–445 Mya — about 0.1 occurrences457.8 Mya445 Mya

11 occurrences of Trochonema retrorsum on record, most of them in the Ordovician. 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

11 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

8 formations

Dunleith — 42.00°N, 90.50°WIon — 42.00°N, 90.50°WPlatteville — 46.00°N, 94.00°WDecorah Shale — 46.00°N, 94.00°WCummingsville — 46.00°N, 94.00°WSpechts Ferry — 42.00°N, 90.50°WGuttenberg — 42.00°N, 90.50°WTelsitna — 62.53°N, 154.84°W

Loading coastlines…

The named rock units Trochonema retrorsum has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Trochonema retrorsum and its relatives

Ordovician

Where Trochonema retrorsum and its relatives were recorded in the Ordovician.

Found in the same rock

159 taxa

The Paleobiology Database records 11 sites for Trochonema retrorsum, 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

2 references

Each of the 11 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 Trochonema retrorsum was found. Wikidata and iDigBio were searched and had none.

Wikipedia and 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 Trochonema retrorsum, or no answer at all. This entry cannot say which.

No 3D scan of Trochonema retrorsum 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 itTrochonema through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ulrich and Scofield 1897