Gallagnostus

Gallagnostus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Cambrian Period, which lasted from approximately 542 to 488 million years ago.

No picture of Gallagnostus was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Gallagnostus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PhalacrominaePBDB
Diet
suspension feederPBDB, for Agnostoidea
Life habit
nektonicPBDB, for Agnostoidea
Motility
actively mobilePBDB, for Agnostoidea
Vision
blindPBDB
Environment
marinePBDB, for Agnostoidea

Time the record covers

At least 10 million years on record.

The record covers at least 497 Mya to 486.4 Mya. No occurrence read is dated outside 506.5 Mya to 477.1 Mya.

Cambrian — about 1 of 10 occurrencesCambrianOrdovician — about 9 of 10 occurrencesOrdovician507–506 Mya — about 0.0 occurrences506–505 Mya — about 0.1 occurrences505–504 Mya — about 0.1 occurrences504–503 Mya — about 0.1 occurrences503–502 Mya — about 0.1 occurrences502–501 Mya — about 0.1 occurrences501–500 Mya — about 0.1 occurrences500–499 Mya — about 0.1 occurrences499–498 Mya — about 0.1 occurrences498–497 Mya — about 0.1 occurrences487–486 Mya — about 0.7 occurrences486–485 Mya — about 1.0 occurrences485–484 Mya — about 1.0 occurrences484–483 Mya — about 1.0 occurrences483–482 Mya — about 1.0 occurrences482–481 Mya — about 1.0 occurrences481–480 Mya — about 1.0 occurrences480–479 Mya — about 1.0 occurrences479–478 Mya — about 1.0 occurrences478–477 Mya — about 0.4 occurrences497 Mya486.4 Mya507.1 Mya476.5 Mya

10 occurrences of Gallagnostus 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

10 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

3 formations

Volcancito — 29.00°S, 68.00°WVolcancito — 28.86°S, 67.69°WLampazar — 23.00°S, 66.00°WSanta Rosita — 23.59°S, 65.37°W

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The named rock units Gallagnostus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Gallagnostus and its relatives

Ordovician

Where Gallagnostus and its relatives were recorded in the Ordovician.

Found in the same rock

57 taxa

The Paleobiology Database records 10 sites for Gallagnostus, 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

4 references

Each of the 10 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 content0

No picture of Gallagnostus was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Gallagnostus, or no answer at all. This entry cannot say which.

No 3D scan of Gallagnostus 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 itPhalacrominae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Howell 1935