Homagnostus

Searched as Homagnostus reductus. The Paleobiology Database treats Homagnostus as the accepted name.

Homagnostus is a genus of trilobites in the order Agnostida, which existed in what is now north Wales. It was described by Howell in 1935. The genus was originally considered to be Agnostus pisiformis var. obesus.

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

On record

Recorded, not inferred
Sits inside
AgnostidaePBDB
Diet
detritivorePBDB, for Agnostida
Life habit
epifaunalPBDB, for Agnostida
Motility
slow-movingPBDB, for Agnostida
Vision
blindPBDB, for Agnostidae

Time the record covers

At most 7.6 million years on record.

Every occurrence read is dated to somewhere between 491 Mya and 483.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 2 of 2 occurrencesCambrianOrdovician — about 0 of 2 occurrencesOrdovician491–491 Mya — about 0.0 occurrences491–491 Mya — about 0.0 occurrences491–490 Mya — about 0.0 occurrences490–490 Mya — about 0.1 occurrences490–490 Mya — about 0.1 occurrences490–489 Mya — about 0.1 occurrences489–489 Mya — about 0.1 occurrences489–489 Mya — about 0.1 occurrences489–489 Mya — about 0.1 occurrences489–488 Mya — about 0.1 occurrences488–488 Mya — about 0.1 occurrences488–488 Mya — about 0.1 occurrences488–487 Mya — about 0.1 occurrences487–487 Mya — about 0.1 occurrences487–487 Mya — about 0.1 occurrences487–487 Mya — about 0.1 occurrences487–486 Mya — about 0.0 occurrences486–486 Mya — about 0.0 occurrences486–486 Mya — about 0.0 occurrences486–485 Mya — about 0.0 occurrences485–485 Mya — about 0.0 occurrences485–485 Mya — about 0.0 occurrences485–485 Mya — about 0.0 occurrences485–484 Mya — about 0.0 occurrences484–484 Mya — about 0.0 occurrences484–484 Mya — about 0.0 occurrences484–483 Mya — about 0.0 occurrences483–483 Mya — about 0.0 occurrences491.5 Mya482.9 Mya

2 occurrences of Homagnostus 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

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

2 formations

Wilberns — 31.00°N, 99.26°WSignal Mountain Limestone — 34.39°N, 97.12°W

Loading coastlines…

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

Homagnostus and its relatives

Cambrian

Where Homagnostus and its relatives were recorded in the Cambrian.

Found in the same rock

296 taxa

The Paleobiology Database records 75 sites for Homagnostus, 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

2 references

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. 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 Homagnostus was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

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

No 3D scan of Homagnostus was found in Smithsonian Open Access and Sketchfab.

MorphoSource 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 itAgnostidae through timeFormations of the CambrianThe world it lived on

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