Dindymene

Dindymene is an extinct genus of trilobites in the order Phacopida. It contains two species, D. didymograpti, and D. hughesiae.

Dindymene

Hypostome · CC BY-SA 3.0 · 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
DindymeninaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
blindPBDB
Environment
marinePBDB, for Trilobita

Time the record covers

At least 41 million years on record.

The record covers at least 468 Mya to 426.7 Mya. No occurrence read is dated outside 477.1 Mya to 422.7 Mya.

Ordovician — about 40 of 41 occurrencesOrdovicianSilurian — about 1 of 41 occurrencesSilurian478–476 Mya — about 0.1 occurrences476–474 Mya — about 0.2 occurrences474–473 Mya — about 0.2 occurrences473–471 Mya — about 0.2 occurrences471–469 Mya — about 0.2 occurrences469–467 Mya — about 0.6 occurrences467–465 Mya — about 0.8 occurrences465–463 Mya — about 0.8 occurrences463–461 Mya — about 0.8 occurrences461–459 Mya — about 2 occurrences459–457 Mya — about 0.4 occurrences457–456 Mya — about 1 occurrence456–454 Mya — about 1 occurrence454–452 Mya — about 2 occurrences452–450 Mya — about 2 occurrences450–448 Mya — about 9 occurrences448–446 Mya — about 11 occurrences446–444 Mya — about 6 occurrences444–442 Mya — about 0.7 occurrences427–425 Mya — about 0.3 occurrences425–423 Mya — about 0.5 occurrences423–422 Mya — about 0.2 occurrences468 Mya426.7 Mya478 Mya422 Mya

41 occurrences of Dindymene 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

41 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

22 formations

Kraluv Dvur — 50.00°N, 14.00°EKraluv Dvur — 50.04°N, 14.41°EKaragach — 47.99°N, 80.91°ESort Tepe — 37.28°N, 43.54°ESort Tepe — 37.28°N, 43.56°EJerrestad Shale — 57.78°N, 14.18°EJonstorp — 58.24°N, 13.73°EJonstorp — 58.22°N, 13.47°EPyle Mountain Argillite — 46.68°N, 68.22°WHope Shale — 52.55°N, 3.03°WHope Shale — 52.60°N, 2.97°WCrugan Mudstone — 53.00°N, 4.00°WDwyfor Mudstone — 53.00°N, 4.00°WRhiwlas Limestone — 53.00°N, 3.00°WPontyfenni — 52.00°N, 5.00°WDobrotiva — 50.00°N, 14.00°EJianchaogou — 29.00°N, 109.00°ETongtou — 31.00°N, 117.00°ELlanfallteg — 51.83°N, 4.65°WKráluv Dvur — 50.03°N, 14.31°EHusbergøya — 59.88°N, 10.72°EUlunda Mudstone — 58.00°N, 13.00°EFukata — 33.53°N, 133.22°ERawtheyan Mudstone — 51.83°N, 3.58°WDobrotivá — 50.10°N, 14.34°ETekhten — 50.99°N, 85.09°E

Loading coastlines…

The named rock units Dindymene has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Dindymene and its relatives

Ordovician

Where Dindymene and its relatives were recorded in the Ordovician.

Found in the same rock

612 taxa

The Paleobiology Database records 38 sites for Dindymene, 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

24 references

Each of the 41 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. 12 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 Dindymene

Credit
Hypostome
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Dindymene 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.

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 itDindymeninae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hawle and Corda 1847