Hedrograptus

No picture of Hedrograptus was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Hedrograptus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
NormalograptidaePBDB
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 6.6 million years on record.

Every occurrence read is dated to somewhere between 445.2 Mya and 438.6 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 0 of 2 occurrencesOrdovicianSilurian — about 2 of 2 occurrencesSilurian445–445 Mya — about 0.0 occurrences445–445 Mya — about 0.1 occurrences445–445 Mya — about 0.1 occurrences445–444 Mya — about 0.1 occurrences444–444 Mya — about 0.1 occurrences444–444 Mya — about 0.1 occurrences444–444 Mya — about 0.1 occurrences444–443 Mya — about 0.1 occurrences443–443 Mya — about 0.1 occurrences443–443 Mya — about 0.1 occurrences443–443 Mya — about 0.1 occurrences443–442 Mya — about 0.1 occurrences442–442 Mya — about 0.1 occurrences442–442 Mya — about 0.1 occurrences442–442 Mya — about 0.1 occurrences442–441 Mya — about 0.1 occurrences441–441 Mya — about 0.1 occurrences441–441 Mya — about 0.1 occurrences441–441 Mya — about 0.1 occurrences441–440 Mya — about 0.1 occurrences440–440 Mya — about 0.1 occurrences440–440 Mya — about 0.1 occurrences440–440 Mya — about 0.1 occurrences440–439 Mya — about 0.1 occurrences439–439 Mya — about 0.1 occurrences439–439 Mya — about 0.1 occurrences439–439 Mya — about 0.1 occurrences439–438 Mya — about 0.0 occurrences445.7 Mya438.1 Mya

2 occurrences of Hedrograptus 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

2 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

2 formations

Vtorye Utyosy — 51.33°N, 83.02°EMoyerokan — 67.34°N, 104.10°E

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

Hedrograptus and its relatives

Silurian

Where Hedrograptus and its relatives were recorded in the Silurian.

Found in the same rock

75 taxa

The Paleobiology Database records 2 sites for Hedrograptus, 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

2 references

Each of the 2 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content0

No picture of Hedrograptus was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Hedrograptus, or no answer at all. This entry cannot say which.

No 3D scan of Hedrograptus 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itNormalograptidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Obut 1949