Exochognathus expansus

No picture of Exochognathus expansus was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Exochognathus expansus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
ExochognathusPBDB
Diet
carnivorePBDB, for Conodontophorida
Life habit
nektobenthicPBDB, for Conodontophorida
Motility
actively mobilePBDB, for Conodontophorida

Time the record covers

At most 24 million years on record.

Every occurrence read is dated to somewhere between 443.1 Mya and 419.62 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 0 of 20 occurrencesSilurian — about 20 of 20 occurrencesSilurianDevonian — about 0 of 20 occurrences444–443 Mya — about 0.5 occurrences443–442 Mya — about 1 occurrence442–441 Mya — about 1 occurrence441–440 Mya — about 1 occurrence440–440 Mya — about 1 occurrence440–439 Mya — about 1 occurrence439–438 Mya — about 1 occurrence438–437 Mya — about 2 occurrences437–436 Mya — about 2 occurrences436–435 Mya — about 2 occurrences435–435 Mya — about 2 occurrences435–434 Mya — about 2 occurrences434–433 Mya — about 2 occurrences433–432 Mya — about 0.5 occurrences432–431 Mya — about 0.4 occurrences431–431 Mya — about 0.4 occurrences431–430 Mya — about 0.1 occurrences430–429 Mya — about 0.1 occurrences429–428 Mya — about 0.1 occurrences428–427 Mya — about 0.1 occurrences427–426 Mya — about 0.1 occurrences426–426 Mya — about 0.1 occurrences426–425 Mya — about 0.1 occurrences425–424 Mya — about 0.1 occurrences424–423 Mya — about 0.1 occurrences423–422 Mya — about 0.1 occurrences422–422 Mya — about 0.1 occurrences422–421 Mya — about 0.1 occurrences421–420 Mya — about 0.1 occurrences420–419 Mya — about 0.0 occurrences443.6 Mya419.1 Mya

20 occurrences of Exochognathus expansus on record, most of them in the Silurian. 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

20 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

4 formations

Esill Shale — 37.70°N, 83.97°WEsill Shale — 37.80°N, 84.08°WEsill Shale — 38.22°N, 83.65°WEsill Shale — 38.55°N, 83.57°WEsill Shale — 38.58°N, 83.50°WEsill Shale — 38.77°N, 83.42°WSalamonie — 39.10°N, 85.36°WSalamonie — 38.48°N, 85.55°WSalamonie — 38.04°N, 85.81°WSalamonie Dolomite — 40.03°N, 85.34°WSalamonie Dolomite — 38.66°N, 85.72°WSalamonie Dolomite — 38.56°N, 85.63°WBrassfield — 38.67°N, 85.46°WBrassfield — 38.04°N, 85.81°W

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

Exochognathus expansus and its relatives

Silurian

Where Exochognathus expansus and its relatives were recorded in the Silurian.

Found in the same rock

23 taxa

The Paleobiology Database records 3 sites for Exochognathus expansus, and this reads all of them. The number is how many of those sites it was catalogued from too.

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 20 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content0

No picture of Exochognathus expansus was found. Wikidata and iDigBio were searched and had none.

Wikipedia and 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 Exochognathus expansus, or no answer at all. This entry cannot say which.

No 3D scan of Exochognathus expansus 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 itExochognathus through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Nicoll and Rexroad 1969)