Archimedes

Archimedes is a genus of bryozoans belonging to the family Fenestellidae. The first use of the term "Archimedes" in relation to this genus was in 1838.

Archimedes

Hectonichus · 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
FenestellidaePBDB
Diet
suspension feederPBDB, for Stenolaemata
Life habit
epifaunalPBDB, for Bryozoa
Motility
stationary, attachedPBDB, for Stenolaemata
Vision
blindPBDB, for Stenolaemata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 68 million years on record.

The record covers at least 342.9 Mya to 274.4 Mya. No occurrence read is dated outside 358.86 Mya to 266.9 Mya.

Devonian — about 0 of 234 occurrencesCarboniferous — about 223 of 234 occurrencesCarboniferousPermian — about 11 of 234 occurrencesPermian361–358 Mya — about 0.5 occurrences358–354 Mya — about 1 occurrence354–351 Mya — about 1 occurrence351–348 Mya — about 2 occurrences348–345 Mya — about 3 occurrences345–342 Mya — about 3 occurrences342–338 Mya — about 2 occurrences338–335 Mya — about 11 occurrences335–332 Mya — about 49 occurrences332–329 Mya — about 71 occurrences329–326 Mya — about 63 occurrences326–322 Mya — about 9 occurrences322–319 Mya — about 0.7 occurrences319–316 Mya — about 0.7 occurrences316–313 Mya — about 0.7 occurrences313–310 Mya — about 0.7 occurrences310–307 Mya — about 0.8 occurrences307–303 Mya — about 2 occurrences303–300 Mya — about 1 occurrence300–297 Mya — about 1 occurrence297–294 Mya — about 1 occurrence294–291 Mya — about 5 occurrences291–287 Mya — about 1 occurrence287–284 Mya — about 0.5 occurrences284–281 Mya — about 0.4 occurrences281–278 Mya — about 0.4 occurrences278–275 Mya — about 0.4 occurrences275–271 Mya — about 0.4 occurrences271–268 Mya — about 0.4 occurrences268–265 Mya — about 0.2 occurrences342.9 Mya274.4 Mya361 Mya265 Mya

234 occurrences of Archimedes on record, most of them in the Carboniferous. 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

234 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

35 formations

Glen Dean Limestone — 38.62°N, 86.68°WGlen Dean Limestone — 38.25°N, 86.54°WGlen Dean Limestone — 38.40°N, 86.59°WGlen Dean Limestone — 38.24°N, 86.43°WGlen Dean Limestone — 38.17°N, 86.57°WGlen Dean Limestone — 38.10°N, 86.56°WGlen Dean Limestone — 37.90°N, 86.64°WGlen Dean Limestone — 37.48°N, 86.30°WGlen Dean Limestone — 37.83°N, 86.60°WGlen Dean Limestone — 36.94°N, 84.54°WGolconda — 39.08°N, 86.82°WGolconda — 38.67°N, 86.82°WGolconda — 38.58°N, 86.66°WGolconda — 38.37°N, 86.36°WGolconda — 38.22°N, 86.53°WGolconda — 38.23°N, 86.43°WGolconda — 38.10°N, 86.48°WGolconda — 37.97°N, 86.56°WGolconda — 37.93°N, 86.54°WGolconda — 37.93°N, 86.57°WBangor Limestone — 34.45°N, 87.75°WBangor Limestone — 34.59°N, 87.63°WBangor Limestone — 34.52°N, 87.58°WParadise — 31.93°N, 109.22°WParadise — 31.93°N, 100.22°WFraileys Shale — 39.00°N, 90.58°WFraileys Shale — 37.41°N, 88.43°WFraileys Shale — 37.38°N, 88.48°WFraileys Shale — 37.53°N, 89.28°WFraileys Shale — 37.33°N, 88.50°WRedoak Hollow — 34.37°N, 97.34°WBeech Creek — 39.21°N, 86.88°WEdwardsville — 39.50°N, 86.50°WEdwardsville — 39.75°N, 86.67°WEdwardsville — 39.00°N, 86.25°WGasper — 34.88°N, 85.50°WNordenskioldbreen — 78.53°N, 16.08°ENordenskioldbreen — 78.64°N, 15.03°EManning Canyon — 40.53°N, 112.30°WPitkin — 35.93°N, 94.02°WPitkin — 35.80°N, 92.53°WCove Creek Limestone — 36.75°N, 82.25°WPennington — 36.75°N, 82.25°WHaney Limestone — 36.95°N, 87.09°WGreat Blue — 40.30°N, 112.22°WIllipah — 38.65°N, 113.97°WNeoschwagerina Beds — 46.37°N, 14.11°EElephant Canyon — 38.50°N, 109.67°WGreat Blue limestone — 40.53°N, 112.30°WEtherington — 50.38°N, 114.61°WChainman — 38.95°N, 113.89°WEly Limestone — 39.26°N, 113.78°WHelms — 31.84°N, 106.06°W

Loading coastlines…

The named rock units Archimedes has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 further formations hold fewer occurrences each and are not listed. 4 occurrences have no formation on record, which is common for older literature.

Archimedes and its relatives

Carboniferous

Where Archimedes and its relatives were recorded in the Carboniferous.

Found in the same rock

698 taxa

The Paleobiology Database records 116 sites for Archimedes, 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

32 references

Each of the 234 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. 20 further references are 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 Archimedes

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

3D model

Source
Sketchfab
Licence
CC Attribution
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 itFenestellidae through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.