Didrepanon

Didrepanon is a trilobite in the order Phacopida, that existed during the upper Silurian in what is now England. It was described by Philip D. Lane in 1971, and the type species is Didrepanon falcatum. The type locality was in Sedgley.

Didrepanon

Daderot · CC0 · 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
CheiruridaePBDB
Diet
carnivorePBDB, for Cheiruridae
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB
Environment
marinePBDB, for Trilobita

Time the record covers

At most 11 million years on record.

Every occurrence read is dated to somewhere between 432.9 Mya and 422.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Silurian — about 8 of 8 occurrencesSilurian433–433 Mya — about 0.0 occurrences433–432 Mya — about 0.1 occurrences432–432 Mya — about 0.1 occurrences432–432 Mya — about 0.1 occurrences432–431 Mya — about 0.1 occurrences431–431 Mya — about 0.1 occurrences431–430 Mya — about 0.2 occurrences430–430 Mya — about 0.3 occurrences430–430 Mya — about 0.3 occurrences430–429 Mya — about 0.3 occurrences429–429 Mya — about 0.3 occurrences429–429 Mya — about 0.3 occurrences429–428 Mya — about 0.3 occurrences428–428 Mya — about 0.3 occurrences428–427 Mya — about 0.3 occurrences427–427 Mya — about 0.3 occurrences427–427 Mya — about 0.3 occurrences427–426 Mya — about 0.7 occurrences426–426 Mya — about 0.7 occurrences426–426 Mya — about 0.7 occurrences426–425 Mya — about 0.7 occurrences425–425 Mya — about 0.5 occurrences425–424 Mya — about 0.3 occurrences424–424 Mya — about 0.3 occurrences424–424 Mya — about 0.3 occurrences424–423 Mya — about 0.3 occurrences423–423 Mya — about 0.3 occurrences423–423 Mya — about 0.2 occurrences433.4 Mya422.2 Mya

8 occurrences of Didrepanon on record, most of them in the Silurian. 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

8 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

5 formations

Kopanina — 50.03°N, 14.32°EKopanina — 49.95°N, 12.93°EKopanina — 49.93°N, 14.18°EDelorme — 62.38°N, 127.00°WDelorme — 62.78°N, 125.25°WCape Phillips — 75.13°N, 95.00°WHemse Beds — 57.23°N, 18.37°EKlinteberg Beds — 57.53°N, 18.43°E

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

Didrepanon and its relatives

Silurian

Where Didrepanon and its relatives were recorded in the Silurian.

Found in the same rock

163 taxa

The Paleobiology Database records 8 sites for Didrepanon, 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

6 references

Each of the 8 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. 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 Didrepanon

Credit
Daderot
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Didrepanon 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.

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 itCheiruridae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lane 1971