Crotalocephalina

Crotalocephalina is an extinct genus of trilobite in the order Phacopida found in Morocco.

Crotalocephalina

via iDigBio · CC BY-NC-ND · 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
CheirurinaePBDB
Diet
carnivorePBDB, for Cheiruridae
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Environment
marinePBDB, for Trilobita

Time the record covers

At least 29 million years on record.

The record covers at least 413.02 Mya to 383.4 Mya. No occurrence read is dated outside 419.62 Mya to 382.31 Mya.

Silurian — about 0 of 56 occurrencesDevonian — about 56 of 56 occurrencesDevonian420–419 Mya — about 1 occurrence419–418 Mya — about 2 occurrences418–416 Mya — about 2 occurrences416–415 Mya — about 2 occurrences415–414 Mya — about 3 occurrences414–413 Mya — about 8 occurrences413–411 Mya — about 18 occurrences411–410 Mya — about 10 occurrences410–409 Mya — about 0.6 occurrences409–407 Mya — about 0.6 occurrences407–406 Mya — about 0.6 occurrences406–405 Mya — about 0.6 occurrences405–404 Mya — about 0.6 occurrences404–402 Mya — about 0.6 occurrences402–401 Mya — about 0.6 occurrences401–400 Mya — about 0.6 occurrences400–398 Mya — about 0.3 occurrences398–397 Mya — about 0.3 occurrences397–396 Mya — about 0.3 occurrences396–394 Mya — about 0.3 occurrences394–393 Mya — about 0.3 occurrences393–392 Mya — about 0.3 occurrences392–391 Mya — about 0.3 occurrences391–389 Mya — about 0.3 occurrences389–388 Mya — about 0.3 occurrences388–387 Mya — about 0.2 occurrences387–385 Mya — about 0.2 occurrences385–384 Mya — about 0.2 occurrences384–383 Mya — about 0.7 occurrences383–382 Mya — about 0.6 occurrences413.02 Mya383.4 Mya420.4 Mya381.6 Mya

56 occurrences of Crotalocephalina on record, most of them in the Devonian. 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

56 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

22 formations

Lochkov — 49.93°N, 14.18°ELochkov — 50.08°N, 14.47°ELochkov — 49.95°N, 14.08°ELochkov — 49.50°N, 14.33°EIhandar — 30.84°N, 4.92°WIhandar — 30.73°N, 4.64°WVinarice Limestone — 50.00°N, 14.00°EVinarice Limestone — 14.83°N, 13.68°ELochkow — 49.93°N, 14.18°ELochkow — 49.97°N, 14.13°ELochkow — 49.98°N, 14.33°EKellerwand — 46.50°N, 13.00°ETiflet Limestone — 34.03°N, 6.85°WSidi Ahroun Limestone — 33.43°N, 6.02°WHamar Laghdad Limestone — 31.38°N, 4.07°WYeringberg — 37.78°S, 145.53°EDaleje-Trebotov — 49.92°N, 14.07°ELambertenghi — 46.50°N, 13.00°EHossei Beds — 34.03°N, 6.85°WZemmour Beds — 34.03°N, 6.85°WMegrane Shale — 31.90°N, 3.13°WTafilalt Limestone — 31.75°N, 4.50°WBen Slimane Kalkknollen — 33.50°N, 7.17°WSaheb el Djir — 31.92°N, 1.85°WDvorce-Prokop — 50.00°N, 14.00°EKess-Kess — 30.95°N, 4.05°WMount Ida — 36.75°S, 144.76°EPraha — 49.42°N, 15.86°ERoteisenstein — 50.31°N, 7.61°E

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The named rock units Crotalocephalina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 14 occurrences have no formation on record, which is common for older literature.

Crotalocephalina and its relatives

Devonian

Where Crotalocephalina and its relatives were recorded in the Devonian.

Found in the same rock

668 taxa

The Paleobiology Database records 48 sites for Crotalocephalina, 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

17 references

Each of the 56 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. 5 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 content1

Picture of Crotalocephalina

Source
iDigBio
Credit
via iDigBio
Licence
CC BY-NC-ND
Commercial use
the licence does not allow it

No 3D scan of Crotalocephalina 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.

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 itCheirurinae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Pibyl and Vanek 1964)