Marrolithus

Marrolithus

via iDigBio · CC BY-NC-ND · via iDigBio. 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
TrinucleidaePBDB
Diet
suspension feederPBDB, for Trinucleidae
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
blindPBDB
Environment
marinePBDB, for Trilobita

Time the record covers

At least 1.5 million years on record.

The record covers at least 459.7 Mya to 458.2 Mya. No occurrence read is dated outside 461.1 Mya to 443.1 Mya.

Ordovician — about 43 of 43 occurrencesOrdovicianSilurian — about 0 of 43 occurrences462–461 Mya — about 1 occurrence461–460 Mya — about 8 occurrences460–460 Mya — about 8 occurrences460–459 Mya — about 7 occurrences459–458 Mya — about 7 occurrences458–458 Mya — about 4 occurrences458–457 Mya — about 2 occurrences457–457 Mya — about 1.0 occurrences457–456 Mya — about 0.6 occurrences456–455 Mya — about 0.6 occurrences455–455 Mya — about 0.5 occurrences455–454 Mya — about 0.4 occurrences454–453 Mya — about 0.4 occurrences453–453 Mya — about 0.4 occurrences453–452 Mya — about 0.3 occurrences452–451 Mya — about 0.3 occurrences451–451 Mya — about 0.3 occurrences451–450 Mya — about 0.3 occurrences450–450 Mya — about 0.1 occurrences450–449 Mya — about 0.1 occurrences449–448 Mya — about 0.1 occurrences448–448 Mya — about 0.1 occurrences448–447 Mya — about 0.1 occurrences447–446 Mya — about 0.1 occurrences446–446 Mya — about 0.1 occurrences446–445 Mya — about 0.1 occurrences445–445 Mya — about 0.1 occurrences445–444 Mya — about 0.1 occurrences444–443 Mya — about 0.1 occurrences443–443 Mya — about 0.0 occurrences459.7 Mya – 458.2 Mya461.6 Mya442.6 Mya

43 occurrences of Marrolithus 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

43 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

14 formations

Ffairfach Flags and Grits — 52.00°N, 4.00°WFlags and Grits — 52.00°N, 4.00°WFfairfach Ashes and Lavas — 52.00°N, 4.00°WVinice — 50.00°N, 14.00°EZahorany — 50.00°N, 14.00°EDobrotivá — 50.03°N, 14.30°EDobrotivá — 50.08°N, 14.33°ELiben — 50.00°N, 14.00°ECaparo — 8.00°N, 71.00°WKermeur — 47.79°N, 3.80°WGrès de May — 49.00°N, 0.00°EAndouille — 48.00°N, 1.00°WLower Ktaoua — 31.08°N, 5.27°WFfairfach Conglomerates — 52.00°N, 4.00°WHoar Edge Grit — 52.43°N, 2.90°W

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The named rock units Marrolithus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Marrolithus and its relatives

Ordovician

Where Marrolithus and its relatives were recorded in the Ordovician.

Found in the same rock

292 taxa

The Paleobiology Database records 42 sites for Marrolithus, 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

11 references

Each of the 43 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 Marrolithus

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

No 3D scan of Marrolithus 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 itTrinucleidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bancroft 1929