Didymograptus extensus

Didymograptus extensus

Yale Peabody Museum · CC0 · via GBIF. 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
DidymograptusPBDB
Diet
suspension feederPBDB, for Graptoloidea
Life habit
planktonicPBDB, for Graptoloidea
Motility
passively mobilePBDB, for Graptoloidea
Vision
blindPBDB, for Graptolithina

Time the record covers

At most 9.1 million years on record.

Every occurrence read is dated to somewhere between 477.1 Mya and 468 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 22 of 22 occurrencesOrdovician477–477 Mya — about 0.3 occurrences477–477 Mya — about 0.6 occurrences477–476 Mya — about 0.6 occurrences476–476 Mya — about 0.6 occurrences476–476 Mya — about 0.6 occurrences476–475 Mya — about 0.6 occurrences475–475 Mya — about 0.6 occurrences475–475 Mya — about 0.6 occurrences475–474 Mya — about 0.6 occurrences474–474 Mya — about 0.6 occurrences474–474 Mya — about 0.6 occurrences474–473 Mya — about 0.6 occurrences473–473 Mya — about 0.6 occurrences473–473 Mya — about 0.7 occurrences473–472 Mya — about 0.7 occurrences472–472 Mya — about 0.7 occurrences472–472 Mya — about 0.7 occurrences472–471 Mya — about 1 occurrence471–471 Mya — about 2 occurrences471–471 Mya — about 2 occurrences471–470 Mya — about 2 occurrences470–470 Mya — about 1 occurrence470–470 Mya — about 1 occurrence470–469 Mya — about 0.8 occurrences469–469 Mya — about 0.6 occurrences469–469 Mya — about 0.6 occurrences469–468 Mya — about 0.6 occurrences468–468 Mya — about 0.3 occurrences477.6 Mya467.5 Mya

22 occurrences of Didymograptus extensus 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

22 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

4 formations

Lower Road River — 65.40°N, 137.38°WLower Road River — 65.88°N, 135.67°WRollston Range — 20.53°S, 146.43°EAorangi Mine — 40.68°S, 172.68°EAorangi Mine — 40.70°S, 172.44°EPhi Kappa — 43.85°N, 114.18°W

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The named rock units Didymograptus extensus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Didymograptus extensus and its relatives

Ordovician

Where Didymograptus extensus and its relatives were recorded in the Ordovician.

Found in the same rock

54 taxa

The Paleobiology Database records 17 sites for Didymograptus extensus, 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 22 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 Didymograptus extensus

Source
GBIF
Credit
Yale Peabody Museum
Licence
CC0
Commercial use
the licence allows it

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 itDidymograptus through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Hall 1858)