Nepeidae

Nepeidae is a family of trilobites that lived from the end of the Middle Cambrian to the beginning of the Late Cambrian in what are today Australia, Antarctica, China and New Zealand. Members of the family can be recognized by a vaulted area between the front of the glabella and the frontal border, eye ridges that extend outward and slightly forward from the front of the glabella, and fixed cheeks that cut into the free cheeks at the inside of the eye, and that extend backwards, forming the inner base of the genal spines. The genal spines, however, are part of the free cheeks and extend backward at least half the length of the thorax. The thorax has at least 20 segments. The tail shield is small.

No picture of Nepeidae was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Nepeidae, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PtychopariidaPBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB
Environment
marinePBDB, for Trilobita

Time the record covers

At least 12 million years on record.

The record covers at least 503 Mya to 490.2 Mya. No occurrence read is dated outside 504.5 Mya to 486.85 Mya.

Cambrian — about 36 of 36 occurrencesCambrianOrdovician — about 0 of 36 occurrences505–504 Mya — about 0.1 occurrences504–504 Mya — about 0.6 occurrences504–503 Mya — about 0.6 occurrences503–503 Mya — about 0.2 occurrences503–502 Mya — about 0.2 occurrences502–501 Mya — about 0.2 occurrences501–501 Mya — about 0.2 occurrences501–500 Mya — about 1 occurrence500–499 Mya — about 2 occurrences499–499 Mya — about 1 occurrence499–498 Mya — about 0.9 occurrences498–498 Mya — about 0.9 occurrences498–497 Mya — about 1 occurrence497–496 Mya — about 3 occurrences496–496 Mya — about 3 occurrences496–495 Mya — about 3 occurrences495–494 Mya — about 3 occurrences494–494 Mya — about 3 occurrences494–493 Mya — about 2 occurrences493–493 Mya — about 1 occurrence493–492 Mya — about 1 occurrence492–491 Mya — about 1 occurrence491–491 Mya — about 1 occurrence491–490 Mya — about 1 occurrence490–489 Mya — about 1 occurrence489–489 Mya — about 1 occurrence489–488 Mya — about 1 occurrence488–488 Mya — about 1 occurrence488–487 Mya — about 1 occurrence487–486 Mya — about 0.2 occurrences503 Mya490.2 Mya505 Mya486.4 Mya

36 occurrences of Nepeidae on record, most of them in the Cambrian. 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

36 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

13 formations

Collier Shale — 35.00°N, 93.00°WCollier Shale — 34.71°N, 92.98°WGatesburg — 40.38°N, 78.20°WGatesburg — 40.76°N, 77.18°WGatesburg — 41.38°N, 75.46°WGatesburg — 41.80°N, 78.68°WDavis — 37.93°N, 90.73°WDavis — 37.77°N, 90.52°WWindfall — 39.45°N, 115.97°WWilberns — 30.64°N, 98.26°WWilberns — 30.51°N, 98.73°WBison Creek — 51.50°N, 116.20°WMungerebar — 22.92°S, 138.80°EWhipple Cave — 38.52°N, 114.97°WIsandula Road — 41.23°S, 146.13°ECurrant Bush Limestone — 19.45°S, 138.67°EShannon — 23.61°S, 134.49°ETasman — 41.00°S, 173.00°ESpurs — 71.34°S, 163.21°E

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The named rock units Nepeidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Nepeidae and its relatives

Cambrian

Where Nepeidae and its relatives were recorded in the Cambrian.

Found in the same rock

174 taxa

The Paleobiology Database records 34 sites for Nepeidae, 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

15 references

Each of the 36 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. 3 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 content0

No picture of Nepeidae was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Nepeidae, or no answer at all. This entry cannot say which.

No 3D scan of Nepeidae 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 itPtychopariida through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Whitehouse 1939