Amphigraptus

Searched as Amphigraptus divergens radiatus. The Paleobiology Database treats Amphigraptus as the accepted name.

Amphigraptus

via GBIF · CC BY-NC 4.0 · 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
NemagraptidaePBDB
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 2.5 million years on record.

The one occurrence read is dated to somewhere between 451.3 Mya and 448.8 Mya, which is a dating window rather than a span.

Ordovician — about 1 of 1 occurrenceOrdovician451–451 Mya — about 0.0 occurrences451–451 Mya — about 0.0 occurrences451–451 Mya — about 0.0 occurrences451–451 Mya — about 0.0 occurrences451–451 Mya — about 0.0 occurrences451–451 Mya — about 0.0 occurrences451–451 Mya — about 0.0 occurrences451–450 Mya — about 0.0 occurrences450–450 Mya — about 0.0 occurrences450–450 Mya — about 0.0 occurrences450–450 Mya — about 0.0 occurrences450–450 Mya — about 0.0 occurrences450–450 Mya — about 0.0 occurrences450–450 Mya — about 0.0 occurrences450–450 Mya — about 0.0 occurrences450–449 Mya — about 0.0 occurrences449–449 Mya — about 0.0 occurrences449–449 Mya — about 0.0 occurrences449–449 Mya — about 0.0 occurrences449–449 Mya — about 0.0 occurrences449–449 Mya — about 0.0 occurrences449–449 Mya — about 0.0 occurrences451.8 Mya448.3 Mya

1 occurrence of Amphigraptus 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

1 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

1 formation

Lower Hartfell Shales — 55.39°N, 3.42°W

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

Amphigraptus and its relatives

Ordovician

Where Amphigraptus and its relatives were recorded in the Ordovician.

Found in the same rock

48 taxa

The Paleobiology Database records 3 sites for Amphigraptus, 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

1 reference

Each of the 1 occurrence 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Amphigraptus

Source
GBIF
Credit
via GBIF
Licence
CC BY-NC 4.0
Commercial use
the licence does not allow 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 itNemagraptidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.