Flexicalymene

Flexicalymene is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Flexicalymene specimens can be mistaken for Calymene, Gravicalymene, Diacalymene and a few other Calymenina genera. They are used as an index fossil in the Ordovician. Ohio and North America are particularly known for being rich with Flexicalymene fossils.

Flexicalymene

Micktherocktapper · CC BY-SA 4.0 · 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
FlexicalymeninaePBDB
Diet
carnivorePBDB, for Calymenidae
Life habit
nektobenthicPBDB
Motility
actively mobilePBDB
Vision
well-developedPBDB, for Calymenidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 25 million years on record.

The record covers at least 458.2 Mya to 432.9 Mya. No occurrence read is dated outside 486.85 Mya to 422.7 Mya.

Cambrian — about 0 of 799 occurrencesOrdovician — about 790 of 799 occurrencesOrdovicianSilurian — about 9 of 799 occurrencesSilurian488–486 Mya — about 0.0 occurrences486–484 Mya — about 0.1 occurrences484–481 Mya — about 0.1 occurrences481–479 Mya — about 0.1 occurrences479–477 Mya — about 0.1 occurrences477–475 Mya — about 0.1 occurrences475–473 Mya — about 0.1 occurrences473–470 Mya — about 0.4 occurrences470–468 Mya — about 0.9 occurrences468–466 Mya — about 1 occurrence466–464 Mya — about 1 occurrence464–461 Mya — about 1 occurrence461–459 Mya — about 19 occurrences459–457 Mya — about 40 occurrences457–455 Mya — about 58 occurrences455–453 Mya — about 60 occurrences453–450 Mya — about 191 occurrences450–448 Mya — about 269 occurrences448–446 Mya — about 115 occurrences446–444 Mya — about 30 occurrences444–441 Mya — about 4 occurrences441–439 Mya — about 0.7 occurrences439–437 Mya — about 1 occurrence437–435 Mya — about 1 occurrence435–433 Mya — about 1 occurrence433–430 Mya — about 1 occurrence430–428 Mya — about 0.9 occurrences428–426 Mya — about 0.7 occurrences426–424 Mya — about 0.4 occurrences424–421 Mya — about 0.2 occurrences458.2 Mya432.9 Mya488 Mya421 Mya

799 occurrences of Flexicalymene 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

799 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

129 formations

Kope — 38.87°N, 84.46°WKope — 39.00°N, 84.00°WKope — 38.80°N, 84.16°WKope — 39.01°N, 84.45°WKope — 39.06°N, 84.44°WKope — 39.03°N, 84.54°WKope — 38.68°N, 83.79°WKope — 38.43°N, 83.99°WKope — 38.77°N, 84.10°WKope — 38.68°N, 84.04°WKope — 39.07°N, 84.50°WWaynesville — 39.45°N, 83.83°WWaynesville — 39.44°N, 84.20°WWaynesville — 39.42°N, 85.01°WWaynesville — 39.00°N, 84.00°WWaynesville — 39.53°N, 84.08°WWaynesville — 39.38°N, 84.08°WWaynesville — 39.35°N, 85.10°WWaynesville — 39.58°N, 84.95°WWaynesville — 39.34°N, 84.95°WWaynesville — 39.48°N, 84.05°WWaynesville — 39.36°N, 84.36°WWaynesville — 39.33°N, 84.07°WWaynesville — 38.77°N, 85.36°WWaynesville — 39.34°N, 85.20°WWaynesville — 39.41°N, 83.98°WWaynesville — 39.39°N, 83.92°WCorryville — 39.00°N, 84.00°WCorryville — 39.43°N, 84.60°WCorryville — 39.17°N, 84.12°WCorryville — 39.30°N, 84.40°WCorryville — 38.68°N, 83.79°WCorryville — 39.33°N, 84.07°WDenley Limestone — 43.21°N, 75.46°WDenley Limestone — 44.00°N, 75.00°WDenley Limestone — 43.28°N, 75.14°WDenley Limestone — 43.00°N, 75.00°WDenley Limestone — 43.88°N, 75.49°WFairview — 39.47°N, 87.41°WFairview — 39.00°N, 84.00°WFairview — 39.01°N, 84.45°WFairview — 39.03°N, 84.51°WFairview — 39.30°N, 84.40°WFairview — 38.68°N, 83.79°WSunset — 39.43°N, 84.60°WSunset — 37.74°N, 84.25°WSunset — 39.33°N, 84.07°WSunset — 38.49°N, 83.76°WSunset — 39.34°N, 84.39°WSunset — 39.37°N, 84.39°WSunset — 39.41°N, 84.50°WSunset — 39.13°N, 84.62°WSunset — 38.61°N, 83.77°WSunset — 39.03°N, 83.85°WDufton Shales — 54.72°N, 2.48°WOregonia — 39.44°N, 84.98°WOregonia — 39.34°N, 84.95°WOregonia — 39.48°N, 84.07°WOregonia — 39.22°N, 84.08°WOregonia — 39.54°N, 84.34°WOregonia — 39.13°N, 84.60°WOregonia — 39.33°N, 84.07°WOregonia — 38.58°N, 83.70°WOregonia — 39.03°N, 83.85°WSolvang — 60.00°N, 11.00°ESolvang — 60.13°N, 10.28°ESolvang — 59.88°N, 10.72°ESolvang — 61.33°N, 8.80°ESolvang — 59.90°N, 10.63°ESolvang — 59.82°N, 10.61°ESolvang — 58.45°N, 8.76°ESolvang — 59.83°N, 10.51°ESolvang — 60.05°N, 10.18°ESolvang — 60.30°N, 10.52°EMartinsburg — 36.95°N, 81.08°WMartinsburg — 37.38°N, 80.86°WMartinsburg — 37.35°N, 80.81°WMartinsburg — 38.52°N, 78.89°WMartinsburg — 38.30°N, 78.01°WMartinsburg — 38.25°N, 79.05°WFfairfach Flags and Grits — 52.00°N, 4.00°WBull Fork — 38.40°N, 83.72°WBull Fork — 38.60°N, 83.72°WBull Fork — 38.59°N, 83.59°WBull Fork — 38.93°N, 83.82°WMount Auburn — 39.00°N, 84.00°WMount Auburn — 39.43°N, 84.60°WMount Auburn — 38.87°N, 83.91°WMount Auburn — 39.33°N, 84.07°WMount Auburn — 38.50°N, 83.76°WMount Auburn — 39.41°N, 84.50°WVerulam — 44.75°N, 79.33°WVerulam — 44.60°N, 78.97°WVerulam — 44.50°N, 78.58°WVerulam — 44.50°N, 78.67°WVerulam — 44.52°N, 78.97°WVerulam — 44.43°N, 78.78°WVerulam — 44.48°N, 78.95°WVerulam — 44.02°N, 77.15°WVerulam — 44.50°N, 79.17°WLiberty — 39.42°N, 85.01°WLiberty — 39.00°N, 84.00°WLiberty — 39.34°N, 84.95°WLiberty — 39.48°N, 84.06°WLiberty — 38.78°N, 85.37°WMiamitown — 39.12°N, 84.51°WMiamitown — 39.17°N, 84.58°WMiamitown — 39.30°N, 84.40°WCampile — 53.44°N, 7.23°WCampile — 53.22°N, 7.93°WCampile — 53.45°N, 7.17°WCwm Rhiwarth — 53.00°N, 3.00°WFfairfach Ashes and Lavas — 52.00°N, 4.00°WWhitewater — 39.00°N, 84.00°WWhitewater — 38.60°N, 85.28°WWhitewater — 39.49°N, 84.95°WArnheim — 36.30°N, 86.65°WArnheim — 39.00°N, 84.00°WArnheim — 39.18°N, 84.65°WArnheim — 39.03°N, 83.92°WArnheim — 38.74°N, 85.38°WArnestad — 60.00°N, 11.00°EArnestad — 61.08°N, 11.75°EArnestad — 59.90°N, 10.55°EArnestad — 59.86°N, 10.46°EArnestad — 59.86°N, 10.43°ENakkholmen — 61.33°N, 8.80°ENakkholmen — 59.90°N, 10.63°ENakkholmen — 59.84°N, 10.54°ENakkholmen — 59.86°N, 10.46°EBellevue — 39.00°N, 84.00°WBellevue — 39.17°N, 84.12°WBellevue — 39.30°N, 84.40°WBellevue — 38.68°N, 83.79°WBellevue — 39.11°N, 84.51°W

Loading coastlines…

The named rock units Flexicalymene has been recovered from, largest first. Drawn where the rock is now, not where it formed. 105 further formations hold fewer occurrences each and are not listed. 25 occurrences have no formation on record, which is common for older literature.

Flexicalymene and its relatives

Ordovician

Where Flexicalymene and its relatives were recorded in the Ordovician.

Found in the same rock

1,439 taxa

The Paleobiology Database records 715 sites for Flexicalymene, and this reads 240 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

114 references

Each of the 799 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. 102 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 content3

Picture of Flexicalymene

Credit
Micktherocktapper
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Flexicalymene senaria · MCZ:IP:186396

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

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 itFlexicalymeninae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Shirley 1936