Phalagnostus

Phalagnostus is a genus of small trilobites, in the order Agnostida. It lived during the Middle Cambrian, in what are now Canada, China, the Czech Republic, Denmark, England, France, the Russian Federation, Wales, Sweden, and possibly the United States (Vermont). The headshield is almost entirely effaced and wider than the tailshield. The pygidium is also very effaced, but the ovate pygidial axis is well defined and a border furrow is also present.

Phalagnostus

Dwergenpaartje · 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
CondylopygoideaPBDB
Diet
detritivorePBDB, for Agnostida
Life habit
epifaunalPBDB, for Agnostida
Motility
slow-movingPBDB, for Agnostida

Time the record covers

At least 3.5 million years on record.

The record covers at least 500.5 Mya to 497 Mya. No occurrence read is dated outside 508.2 Mya to 486.85 Mya.

Cambrian — about 26 of 26 occurrencesCambrianOrdovician — about 0 of 26 occurrences509–508 Mya — about 0.1 occurrences508–507 Mya — about 0.3 occurrences507–506 Mya — about 0.3 occurrences506–506 Mya — about 0.6 occurrences506–505 Mya — about 0.6 occurrences505–504 Mya — about 1 occurrence504–503 Mya — about 2 occurrences503–503 Mya — about 2 occurrences503–502 Mya — about 2 occurrences502–501 Mya — about 2 occurrences501–501 Mya — about 2 occurrences501–500 Mya — about 3 occurrences500–499 Mya — about 1 occurrence499–498 Mya — about 0.9 occurrences498–498 Mya — about 0.9 occurrences498–497 Mya — about 0.7 occurrences497–496 Mya — about 0.3 occurrences496–495 Mya — about 0.3 occurrences495–495 Mya — about 0.3 occurrences495–494 Mya — about 0.3 occurrences494–493 Mya — about 0.3 occurrences493–492 Mya — about 0.3 occurrences492–492 Mya — about 0.3 occurrences492–491 Mya — about 0.3 occurrences491–490 Mya — about 0.3 occurrences490–489 Mya — about 0.3 occurrences489–489 Mya — about 0.3 occurrences489–488 Mya — about 0.3 occurrences488–487 Mya — about 0.3 occurrences487–486 Mya — about 0.1 occurrences500.5 Mya497 Mya508.7 Mya486.4 Mya

26 occurrences of Phalagnostus 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

26 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

11 formations

Samodi — 68.00°N, 88.82°EJince — 49.78°N, 13.97°ERabbitkettle — 62.70°N, 128.38°WYangliugang — 28.82°N, 118.60°EHillard Limestone — 65.00°N, 141.00°WSkryje — 49.95°N, 13.77°ESkryje Shale — 49.97°N, 13.77°EHuaqiao — 28.39°N, 109.53°EXijiadian — 32.80°N, 111.45°EMenevia — 51.87°N, 5.22°WBuchava — 49.96°N, 13.74°E

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The named rock units Phalagnostus 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.

Phalagnostus and its relatives

Cambrian

Where Phalagnostus and its relatives were recorded in the Cambrian.

Found in the same rock

139 taxa

The Paleobiology Database records 15 sites for Phalagnostus, 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

13 references

Each of the 26 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. 1 further reference is 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 content2

Picture of Phalagnostus

Credit
Dwergenpaartje
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
Free Standard
Commercial use
cannot be read from the licence given — check the record

Smithsonian Open Access and MorphoSource were 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 itCondylopygoidea through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Howell 1955