Genevievella

Genevievella is a genus of trilobites with a short inverted egg-shaped outline, a wide headshield, small eyes, and long genal spines. The backrim of the headshield is inflated and overhangs the first of the 9 thorax segments. The 8th thorax segment from the front bears a backward directed spine that reaches beyond the back end of the exoskeleton. It has an almost oval tailshield with 5 pairs of pleural furrows. It lived during the Upper Cambrian in what are today Canada and the United States.

Genevievella

Dwergenpaartje · 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
LlanoaspididaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Llanoaspididae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 2.5 million years on record.

The record covers at least 499.5 Mya to 497 Mya. No occurrence read is dated outside 504.5 Mya to 486.85 Mya.

Cambrian — about 28 of 28 occurrencesCambrianOrdovician — about 0 of 28 occurrences505–504 Mya — about 0.1 occurrences504–504 Mya — about 0.5 occurrences504–503 Mya — about 0.5 occurrences503–503 Mya — about 0.5 occurrences503–502 Mya — about 0.5 occurrences502–501 Mya — about 0.5 occurrences501–501 Mya — about 0.5 occurrences501–500 Mya — about 0.9 occurrences500–499 Mya — about 1.0 occurrences499–499 Mya — about 0.9 occurrences499–498 Mya — about 0.9 occurrences498–498 Mya — about 0.9 occurrences498–497 Mya — about 0.9 occurrences497–496 Mya — about 1 occurrence496–496 Mya — about 1 occurrence496–495 Mya — about 1 occurrence495–494 Mya — about 1 occurrence494–494 Mya — about 1 occurrence494–493 Mya — about 1 occurrence493–493 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 occurrences499.5 Mya497 Mya505 Mya486.4 Mya

28 occurrences of Genevievella 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

28 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

9 formations

Warrior — 40.82°N, 77.93°WWarrior — 40.70°N, 78.12°WRabbitkettle — 62.70°N, 128.38°WOrr — 39.21°N, 113.32°WWeeks — 39.22°N, 113.34°WWeeks — 39.22°N, 113.40°WWeeks — 39.45°N, 113.80°WRiley — 30.81°N, 98.28°WRiley — 30.54°N, 99.09°WRiley — 30.81°N, 98.37°WPilgrim — 44.66°N, 111.10°WSt. Albans Shale — 44.48°N, 73.21°WMarjum and Weeks — 39.22°N, 113.45°WMilpillas — 28.92°N, 109.29°W

Loading coastlines…

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

Genevievella and its relatives

Cambrian

Where Genevievella and its relatives were recorded in the Cambrian.

Found in the same rock

160 taxa

The Paleobiology Database records 26 sites for Genevievella, 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

11 references

Each of the 28 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. 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 Genevievella

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

No 3D scan of Genevievella was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itLlanoaspididae through timeFormations of the CambrianThe world it lived on

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