Hormotoma scrobiculata

Hormotoma scrobiculata (Koken, 1897), a relative of Hormotoma scrobiculata — not Hormotoma scrobiculata itself

Not Hormotoma scrobiculata. This is Hormotoma scrobiculata (Koken, 1897), a relative — both are Murchisoniidae.

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
HormotomaPBDB
Diet
herbivorePBDB, for Hormotoma
Life habit
epifaunalPBDB, for Hormotoma
Motility
actively mobilePBDB, for Hormotoma
Vision
limitedPBDB, for Murchisoniina
Environment
coastal,marinePBDB, for Murchisoniina

Time the record covers

At most 400 thousand years on record.

Every occurrence read is dated to somewhere between 449.9 Mya and 449.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 2 of 2 occurrencesOrdovician450–450 Mya — about 0.1 occurrences450–450 Mya — about 0.2 occurrences450–450 Mya — about 0.2 occurrences450–450 Mya — about 0.2 occurrences450–450 Mya — about 0.2 occurrences450–450 Mya — about 0.2 occurrences450–450 Mya — about 0.2 occurrences450–450 Mya — about 0.2 occurrences450–450 Mya — about 0.2 occurrences450–449 Mya — about 0.1 occurrences450.4 Mya449 Mya

2 occurrences of Hormotoma scrobiculata 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

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

1 formation

Kõrgessaare — 59.02°N, 23.14°EKõrgessaare — 58.99°N, 24.78°E

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

Hormotoma scrobiculata and its relatives

Ordovician

Where Hormotoma scrobiculata and its relatives were recorded in the Ordovician.

Found in the same rock

23 taxa

The Paleobiology Database records 2 sites for Hormotoma scrobiculata, 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

1 reference

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 content1

Picture of Hormotoma scrobiculata (Koken, 1897)

Source
GBIF
Credit
via GBIF
Licence
CC BY-NC 4.0
Commercial use
the licence does not allow it

No 3D scan of Hormotoma scrobiculata 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.

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

Keep going

What may have been alongside itHormotoma through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Koken 1897)