Flexicalymene

Searched as Flexicalymene declinata. The Paleobiology Database treats Flexicalymene as the accepted name.

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 most 4.9 million years on record.

Every occurrence read is dated to somewhere between 450.1 Mya and 445.2 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 2 of 2 occurrencesOrdovician450–450 Mya — about 0.0 occurrences450–450 Mya — about 0.1 occurrences450–450 Mya — about 0.1 occurrences450–449 Mya — about 0.1 occurrences449–449 Mya — about 0.1 occurrences449–449 Mya — about 0.1 occurrences449–449 Mya — about 0.1 occurrences449–449 Mya — about 0.1 occurrences449–448 Mya — about 0.1 occurrences448–448 Mya — about 0.1 occurrences448–448 Mya — about 0.1 occurrences448–448 Mya — about 0.1 occurrences448–448 Mya — about 0.1 occurrences448–447 Mya — about 0.1 occurrences447–447 Mya — about 0.1 occurrences447–447 Mya — about 0.1 occurrences447–447 Mya — about 0.1 occurrences447–447 Mya — about 0.1 occurrences447–446 Mya — about 0.1 occurrences446–446 Mya — about 0.1 occurrences446–446 Mya — about 0.1 occurrences446–446 Mya — about 0.1 occurrences446–446 Mya — about 0.1 occurrences446–445 Mya — about 0.1 occurrences445–445 Mya — about 0.1 occurrences445–445 Mya — about 0.0 occurrences450.6 Mya444.7 Mya

2 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

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

1 formation

Kraluv Dvur — 50.00°N, 14.00°E

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

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

1 reference

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

Media and terms

Media content2

Picture of Flexicalymene

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

3D model

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

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 itFlexicalymeninae through timeFormations of the OrdovicianThe world it lived on

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