Tetragraptus

Searched as Tetragraptus bigsbyi diverrens. The Paleobiology Database treats Tetragraptus as the accepted name.

Tetragraptus is an extinct genus of graptolites from the Ordovician period.

Tetragraptus

Uncredited · CC BY-SA 3.0 · 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
PhyllograptidaePBDB
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 7.3 million years on record.

The one occurrence read is dated to somewhere between 482.9 Mya and 475.6 Mya, which is a dating window rather than a span.

Ordovician — about 1 of 1 occurrenceOrdovician483–483 Mya — about 0.0 occurrences483–483 Mya — about 0.0 occurrences483–482 Mya — about 0.0 occurrences482–482 Mya — about 0.0 occurrences482–482 Mya — about 0.0 occurrences482–481 Mya — about 0.0 occurrences481–481 Mya — about 0.0 occurrences481–481 Mya — about 0.0 occurrences481–481 Mya — about 0.0 occurrences481–480 Mya — about 0.0 occurrences480–480 Mya — about 0.0 occurrences480–480 Mya — about 0.0 occurrences480–480 Mya — about 0.0 occurrences480–479 Mya — about 0.0 occurrences479–479 Mya — about 0.0 occurrences479–479 Mya — about 0.0 occurrences479–478 Mya — about 0.0 occurrences478–478 Mya — about 0.0 occurrences478–478 Mya — about 0.0 occurrences478–478 Mya — about 0.0 occurrences478–477 Mya — about 0.0 occurrences477–477 Mya — about 0.0 occurrences477–477 Mya — about 0.0 occurrences477–476 Mya — about 0.0 occurrences476–476 Mya — about 0.0 occurrences476–476 Mya — about 0.0 occurrences476–476 Mya — about 0.0 occurrences476–475 Mya — about 0.0 occurrences483.4 Mya475.1 Mya

1 occurrence of Tetragraptus 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

Sementsovskaya — 58.41°N, 37.53°E

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

Tetragraptus and its relatives

Ordovician

Where Tetragraptus and its relatives were recorded in the Ordovician.

Found in the same rock

651 taxa

The Paleobiology Database records 176 sites for Tetragraptus, 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 the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Tetragraptus

Credit
nobody named on the record
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Tetragraptus was found in MorphoSource and Sketchfab.

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

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 itPhyllograptidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Salter 1863