Discosorus

Discosorus, a genus of the Discosorida and member of the family Discosoridae. Not to be confused with Discoceras. Discosorus consists of rapidly expanding endogastric brevicones, mostly known from isolated siphuncles composed of broadly expanded segments that increase rapidly in size. Septal necks are recumbent, connecting rings thin, bullettes small. The siphuncle interior is occupied by endocones produced by layered annular deposits expanded back toward the apex, leaving a central tube running down the middle. The short phragmocone is poorly known.

Discosorus

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
DiscosoridaePBDB
Diet
carnivorePBDB, for Cephalopoda
Life habit
nektobenthicPBDB, for Discosorida
Motility
actively mobilePBDB, for Discosorida
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Discosorida

Time the record covers

At least 6.9 million years on record.

The record covers at least 445.5 Mya to 438.6 Mya. No occurrence read is dated outside 449.6 Mya to 432.9 Mya.

Ordovician — about 5 of 22 occurrencesOrdovicianSilurian — about 17 of 22 occurrencesSilurian450–450 Mya — about 0.1 occurrences450–449 Mya — about 0.5 occurrences449–448 Mya — about 0.5 occurrences448–448 Mya — about 0.5 occurrences448–447 Mya — about 0.5 occurrences447–447 Mya — about 0.5 occurrences447–446 Mya — about 0.5 occurrences446–445 Mya — about 0.4 occurrences445–445 Mya — about 0.3 occurrences445–444 Mya — about 0.4 occurrences444–444 Mya — about 0.4 occurrences444–443 Mya — about 0.3 occurrences443–442 Mya — about 0.1 occurrences442–442 Mya — about 0.1 occurrences442–441 Mya — about 0.1 occurrences441–441 Mya — about 0.1 occurrences441–440 Mya — about 0.9 occurrences440–439 Mya — about 1 occurrence439–439 Mya — about 1 occurrence439–438 Mya — about 1 occurrence438–438 Mya — about 1 occurrence438–437 Mya — about 1 occurrence437–437 Mya — about 1 occurrence437–436 Mya — about 1 occurrence436–435 Mya — about 1 occurrence435–435 Mya — about 1 occurrence435–434 Mya — about 1 occurrence434–434 Mya — about 1 occurrence434–433 Mya — about 1 occurrence433–432 Mya — about 0.2 occurrences445.5 Mya438.6 Mya450.1 Mya432.4 Mya

22 occurrences of Discosorus 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

22 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

6 formations

Jupiter — 49.47°N, 63.62°WJupiter — 49.38°N, 63.60°WJupiter — 49.28°N, 63.22°WJupiter — 49.42°N, 63.50°WThornloe — 47.75°N, 79.82°WEllis Bay — 49.52°N, 62.42°WEllis Bay — 49.45°N, 62.30°WHopkinton — 42.17°N, 90.58°WReynales — 43.26°N, 77.16°WSodus — 43.15°N, 75.56°W

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The named rock units Discosorus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Discosorus and its relatives

Silurian

Where Discosorus and its relatives were recorded in the Silurian.

Found in the same rock

196 taxa

The Paleobiology Database records 18 sites for Discosorus, 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

8 references

Each of the 22 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 content1

Picture of Discosorus

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.

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 itDiscosoridae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1852