Sigmagraptus praecursor

Sigmagraptus praecursor

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
SigmagraptusPBDB
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 19 million years on record.

Every occurrence read is dated to somewhere between 486.85 Mya and 468 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 0 of 8 occurrencesOrdovician — about 8 of 8 occurrencesOrdovician487–487 Mya — about 0.0 occurrences487–486 Mya — about 0.0 occurrences486–485 Mya — about 0.0 occurrences485–485 Mya — about 0.0 occurrences485–484 Mya — about 0.0 occurrences484–483 Mya — about 0.0 occurrences483–483 Mya — about 0.0 occurrences483–482 Mya — about 0.0 occurrences482–481 Mya — about 0.0 occurrences481–481 Mya — about 0.0 occurrences481–480 Mya — about 0.0 occurrences480–479 Mya — about 0.0 occurrences479–479 Mya — about 0.0 occurrences479–478 Mya — about 0.0 occurrences478–477 Mya — about 0.0 occurrences477–477 Mya — about 0.3 occurrences477–476 Mya — about 0.6 occurrences476–475 Mya — about 0.6 occurrences475–475 Mya — about 0.6 occurrences475–474 Mya — about 0.6 occurrences474–473 Mya — about 0.6 occurrences473–473 Mya — about 0.6 occurrences473–472 Mya — about 0.6 occurrences472–471 Mya — about 0.6 occurrences471–471 Mya — about 0.5 occurrences471–470 Mya — about 0.5 occurrences470–469 Mya — about 0.5 occurrences469–469 Mya — about 0.5 occurrences469–468 Mya — about 0.5 occurrences468–468 Mya — about 0.1 occurrences487.4 Mya467.5 Mya

8 occurrences of Sigmagraptus praecursor 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

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

3 formations

Rollston Range — 20.53°S, 146.43°ELower Road River — 65.88°N, 135.67°WCochinoca-Escaya Magmatic Sedimentary Complex — 22.69°S, 65.86°W

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

Sigmagraptus praecursor and its relatives

Ordovician

Where Sigmagraptus praecursor and its relatives were recorded in the Ordovician.

Found in the same rock

20 taxa

The Paleobiology Database records 6 sites for Sigmagraptus praecursor, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

3 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 Sigmagraptus praecursor

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 itSigmagraptus through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ruedemann 1904