Modocia

Modocia

via iDigBio · CC0 · 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
MarjumiidaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Marjumiidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 7.5 million years on record.

The record covers at least 504.5 Mya to 497 Mya. No occurrence read is dated outside 514.5 Mya to 486.85 Mya.

Cambrian — about 90 of 90 occurrencesCambrianOrdovician — about 0 of 90 occurrences515–514 Mya — about 0.0 occurrences514–513 Mya — about 0.1 occurrences513–512 Mya — about 0.1 occurrences512–511 Mya — about 0.1 occurrences511–510 Mya — about 0.1 occurrences510–509 Mya — about 0.1 occurrences509–508 Mya — about 0.1 occurrences508–507 Mya — about 0.1 occurrences507–506 Mya — about 0.2 occurrences506–505 Mya — about 2 occurrences505–505 Mya — about 2 occurrences505–504 Mya — about 10 occurrences504–503 Mya — about 10 occurrences503–502 Mya — about 10 occurrences502–501 Mya — about 10 occurrences501–500 Mya — about 12 occurrences500–499 Mya — about 8 occurrences499–498 Mya — about 6 occurrences498–497 Mya — about 6 occurrences497–496 Mya — about 1 occurrence496–495 Mya — about 1 occurrence495–494 Mya — about 1 occurrence494–493 Mya — about 1 occurrence493–492 Mya — about 1 occurrence492–491 Mya — about 1 occurrence491–490 Mya — about 1 occurrence490–489 Mya — about 1 occurrence489–488 Mya — about 1 occurrence488–487 Mya — about 1 occurrence487–486 Mya — about 0.6 occurrences504.5 Mya497 Mya515.1 Mya486.3 Mya

90 occurrences of Modocia on record, most of them in the Cambrian. 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

90 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

24 formations

Deadwood — 43.85°N, 103.36°WDeadwood — 43.58°N, 103.55°WDeadwood — 44.25°N, 103.78°WDeadwood — 43.53°N, 103.43°WDeadwood — 44.35°N, 104.00°WDeadwood — 43.82°N, 103.77°WDeadwood — 43.72°N, 103.67°WDeadwood — 43.53°N, 103.55°WDeadwood — 43.05°N, 103.05°WHolm Dal — 82.42°N, 39.75°WMarjum — 39.40°N, 113.80°WMarjum — 39.00°N, 113.00°WMarjum — 39.36°N, 113.27°WMarjum — 39.27°N, 113.31°WRabbitkettle — 64.67°N, 132.00°WRabbitkettle — 62.70°N, 128.38°WRiley — 30.91°N, 99.00°WRiley — 30.54°N, 99.09°WRiley — 30.49°N, 98.52°WRiley — 30.36°N, 98.47°WWheeler Shale — 39.36°N, 111.59°WWheeler Shale — 39.20°N, 113.30°WWheeler Shale — 39.29°N, 113.31°WDuchesnay — 51.10°N, 115.95°WDuchesnay — 50.63°N, 115.60°WPilgrim — 44.66°N, 111.10°WMarjum Limestone — 39.22°N, 113.40°WMarjum Limestone — 38.88°N, 113.44°WWeeks — 39.22°N, 113.34°WWeeks — 39.22°N, 113.40°WSt. Albans Shale — 44.48°N, 73.21°WBloomington — 42.19°N, 112.25°WSkeels Corner Slate — 44.78°N, 73.11°WGros Ventre — 44.66°N, 111.10°WDresbach — 44.52°N, 89.57°WPerekhod — 51.97°N, 85.97°EMarjum and Weeks — 39.22°N, 113.45°WHillard Limestone — 64.95°N, 141.01°WUpper Wheeler Shale — 40.00°N, 113.00°WWarrior — 40.83°N, 77.93°WWheeler — 39.52°N, 113.00°WKaili — 26.40°N, 107.88°EKulyumbe — 68.00°N, 88.82°ETasman — 41.00°S, 173.00°E

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The named rock units Modocia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Modocia and its relatives

Cambrian

Where Modocia and its relatives were recorded in the Cambrian.

Found in the same rock

447 taxa

The Paleobiology Database records 73 sites for Modocia, 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

30 references

Each of the 90 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. 18 further references are not listed. 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 Modocia

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows 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 itMarjumiidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1924