Didymograptus

Didymograptus is an extinct genus of graptolites with two rows of cups. They lived during the Middle Ordovician, to Late Ordovician.

A picture published with the record for Didymograptus.

kevinzim / Kevin Walsh , retouched by Verisimilus · CC BY 2.0 · 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
DichograptidaePBDB
Diet
suspension feederPBDB, for Graptoloidea
Life habit
planktonicPBDB, for Graptoloidea
Motility
passively mobilePBDB, for Graptoloidea
Vision
blindPBDB, for Graptolithina

Time the record covers

At least 27 million years on record.

The record covers at least 477.1 Mya to 449.6 Mya. No occurrence read is dated outside 488.9 Mya to 443.1 Mya.

Cambrian — about 0 of 433 occurrencesOrdovician — about 433 of 433 occurrencesOrdovicianSilurian — about 0 of 433 occurrences490–488 Mya — about 0.0 occurrences488–487 Mya — about 0.2 occurrences487–485 Mya — about 3 occurrences485–483 Mya — about 4 occurrences483–482 Mya — about 7 occurrences482–480 Mya — about 9 occurrences480–479 Mya — about 9 occurrences479–477 Mya — about 12 occurrences477–476 Mya — about 43 occurrences476–474 Mya — about 41 occurrences474–472 Mya — about 41 occurrences472–471 Mya — about 46 occurrences471–469 Mya — about 57 occurrences469–468 Mya — about 33 occurrences468–466 Mya — about 17 occurrences466–464 Mya — about 15 occurrences464–463 Mya — about 15 occurrences463–461 Mya — about 14 occurrences461–460 Mya — about 27 occurrences460–458 Mya — about 20 occurrences458–456 Mya — about 5 occurrences456–455 Mya — about 3 occurrences455–453 Mya — about 3 occurrences453–452 Mya — about 3 occurrences452–450 Mya — about 3 occurrences450–449 Mya — about 1 occurrence449–447 Mya — about 0.5 occurrences447–445 Mya — about 0.5 occurrences445–444 Mya — about 0.1 occurrences444–442 Mya — about 0.0 occurrences477.1 Mya449.6 Mya489.8 Mya442.2 Mya

433 occurrences of Didymograptus 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

433 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

127 formations

Meitan — 28.00°N, 107.00°EMeitan — 29.00°N, 107.00°EMeitan — 27.00°N, 107.00°EMeitan — 27.00°N, 105.00°EMeitan — 29.00°N, 109.00°EMeitan — 28.00°N, 105.00°EAcoite — 22.30°S, 65.30°WAcoite — 23.19°S, 65.72°WAcoite — 23.26°S, 65.64°WAcoite — 23.08°S, 65.70°WAcoite — 23.67°S, 65.69°WAcoite — 23.58°S, 65.69°WAcoite — 22.99°S, 65.70°WLower Road River — 62.47°N, 129.07°WLower Road River — 65.40°N, 137.38°WLower Road River — 66.17°N, 136.08°WLower Road River — 65.88°N, 135.67°WAorangi Mine — 40.68°S, 172.68°EAorangi Mine — 40.60°S, 172.56°EAorangi Mine — 40.72°S, 172.45°EAorangi Mine — 41.99°S, 172.16°EAorangi Mine — 41.67°S, 172.39°ENingguo — 29.00°N, 115.00°ENingguo — 28.00°N, 118.00°ENingguo — 30.00°N, 120.00°ENingguo — 30.00°N, 119.00°ENingguo — 29.00°N, 119.00°ERollston Range — 20.53°S, 146.43°ELeslie — 41.14°S, 172.59°ELeslie — 41.09°S, 172.54°ELeetse — 59.88°N, 31.59°ELeetse — 59.87°N, 31.43°EDawan — 33.00°N, 111.00°EDawan — 28.00°N, 109.00°EDawan — 32.00°N, 108.00°EDawan — 29.00°N, 109.00°EDawan — 31.00°N, 111.00°EDawan — 27.00°N, 101.00°EDawan — 30.00°N, 116.00°ERoad River — 65.02°N, 141.21°WRoad River — 65.19°N, 141.32°WPhi Kappa — 43.85°N, 114.18°WZhitai — 29.00°N, 109.00°EHule — 29.00°N, 115.00°EHule — 28.00°N, 118.00°EHule — 29.00°N, 119.00°EHule — 31.00°N, 120.00°EHule — 30.00°N, 120.00°EKaradere — 41.27°N, 33.08°ESakyna — 56.30°N, 22.86°ESakyna — 56.30°N, 23.80°ESakyna — 56.18°N, 23.13°EShihtien — 25.00°N, 99.06°EFengdong'gun — 28.00°N, 105.00°EHongsiya — 28.00°N, 105.00°EHongsiya — 26.00°N, 102.00°EHongsiya — 27.00°N, 102.00°EHanadir Shale — 26.00°N, 43.00°ETuloi — 52.22°N, 87.01°EFlorentine Valley Limestone — 42.00°S, 146.00°EFlorentine Valley Limestone — 42.72°S, 146.48°EToyen — 60.00°N, 11.00°EXiaotan — 32.00°N, 118.00°EYeli — 40.00°N, 118.00°EYeli — 40.00°N, 114.00°EYeli — 38.00°N, 113.00°E

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The named rock units Didymograptus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 103 further formations hold fewer occurrences each and are not listed. 32 occurrences have no formation on record, which is common for older literature.

Didymograptus and its relatives

Ordovician

Where Didymograptus and its relatives were recorded in the Ordovician.

Found in the same rock

853 taxa

The Paleobiology Database records 349 sites for Didymograptus, and this reads 240 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

110 references

Each of the 433 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. 98 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 content3

Picture of Didymograptus

Credit
kevinzim / Kevin Walsh , retouched by Verisimilus
Licence
CC BY 2.0
Commercial use
the licence allows it

Photogrammetry

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
didymograptus sp. · MST:PALEO:MST-SP-6736

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

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 itDichograptidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. McCoy 1851