Greenops

Greenops is a mid-sized Devonian trilobite of the order Phacopida, subfamily Asteropyginae. They are mainly reported from the mid-Devonian Hamilton Group of upstate New York and southwestern Ontario. A similar-looking trilobite from Morocco is often mis-labelled Greenops. Greenops had schizocroidal eyes, large genal spines and short, sharp spines at the tip of each segment of the pygidium ("tail"). Greenops lived in warm, fairly deep water. In the Hamilton Group of New York, they are found with Eldredgeops, Dipleura and Bellacartwrightia, a trilobite that resembles Greenops but has much larger pygidial spines. In Ontario, they are found in the Widder Formation, which outcrops at Arkona, where they are, by far, the dominant trilobite.

Greenops

Jsnrice · 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
AcastidaePBDB
Diet
carnivorePBDB, for Phacopina
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Acastidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 17 million years on record.

The record covers at least 399.5 Mya to 382.31 Mya. No occurrence read is dated outside 410.62 Mya to 372.15 Mya.

Devonian — about 193 of 193 occurrencesDevonian411–410 Mya — about 0.1 occurrences410–409 Mya — about 0.1 occurrences409–407 Mya — about 0.1 occurrences407–406 Mya — about 0.1 occurrences406–405 Mya — about 0.1 occurrences405–403 Mya — about 0.1 occurrences403–402 Mya — about 0.1 occurrences402–401 Mya — about 0.1 occurrences401–399 Mya — about 0.2 occurrences399–398 Mya — about 1 occurrence398–397 Mya — about 1 occurrence397–395 Mya — about 1 occurrence395–394 Mya — about 1 occurrence394–393 Mya — about 3 occurrences393–391 Mya — about 4 occurrences391–390 Mya — about 4 occurrences390–389 Mya — about 4 occurrences389–387 Mya — about 19 occurrences387–386 Mya — about 39 occurrences386–385 Mya — about 40 occurrences385–383 Mya — about 40 occurrences383–382 Mya — about 32 occurrences382–381 Mya — about 1 occurrence381–379 Mya — about 1 occurrence379–378 Mya — about 0.6 occurrences378–377 Mya — about 0.2 occurrences377–375 Mya — about 0.2 occurrences375–374 Mya — about 0.2 occurrences374–373 Mya — about 0.2 occurrences373–371 Mya — about 0.1 occurrences399.5 Mya382.31 Mya411.4 Mya371.4 Mya

193 occurrences of Greenops 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

193 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

28 formations

Ludlowville — 42.76°N, 78.65°WLudlowville — 42.78°N, 78.79°WLudlowville — 42.86°N, 77.76°WLudlowville — 42.83°N, 77.81°WLudlowville — 42.96°N, 78.13°WLudlowville — 42.80°N, 77.27°WLudlowville — 42.78°N, 76.99°WLudlowville — 42.85°N, 78.64°WLudlowville — 42.85°N, 78.37°WLudlowville — 42.87°N, 77.87°WLudlowville — 43.00°N, 79.00°WLudlowville — 42.91°N, 78.48°WLudlowville — 42.77°N, 76.71°WLudlowville — 42.75°N, 76.77°WLudlowville — 42.73°N, 76.71°WLudlowville — 42.89°N, 76.75°WLudlowville — 42.76°N, 75.54°WLudlowville — 42.87°N, 75.71°WLudlowville — 42.76°N, 76.47°WLudlowville — 42.74°N, 75.54°WMoscow — 42.70°N, 76.75°WMoscow — 42.82°N, 78.68°WMoscow — 42.90°N, 78.04°WMoscow — 42.83°N, 75.78°WMoscow — 42.67°N, 76.73°WMoscow — 42.79°N, 76.15°WMoscow — 42.77°N, 76.03°WMoscow — 42.81°N, 75.91°WMoscow — 42.66°N, 75.38°WMoscow — 42.68°N, 75.57°WMoscow — 42.68°N, 75.46°WMoscow — 42.60°N, 74.95°WMoscow — 42.59°N, 74.58°WMoscow — 42.75°N, 77.15°WMoscow — 42.77°N, 77.83°WMoscow — 42.82°N, 77.57°WMoscow — 42.78°N, 77.33°WMoscow — 42.67°N, 76.95°WMoscow — 42.47°N, 74.47°WSkaneateles — 42.80°N, 76.69°WSkaneateles — 42.90°N, 76.47°WSkaneateles — 42.97°N, 76.44°WSkaneateles — 42.98°N, 76.34°WSkaneateles — 42.94°N, 76.25°WSkaneateles — 42.93°N, 75.99°WSkaneateles — 42.92°N, 76.21°WSkaneateles — 42.86°N, 75.89°WSkaneateles — 42.95°N, 76.43°WSkaneateles — 42.86°N, 76.14°WSkaneateles — 42.90°N, 75.60°WSkaneateles — 42.79°N, 75.27°WSkaneateles — 42.87°N, 77.88°WSkaneateles — 42.98°N, 76.09°WTully — 42.60°N, 75.34°WTully — 42.79°N, 75.80°WTully — 42.74°N, 75.88°WTully — 42.59°N, 75.18°WTully — 42.53°N, 74.81°WMahantango — 40.50°N, 77.25°WMahantango — 40.05°N, 77.52°WMahantango — 40.33°N, 76.92°WMahantango — 40.42°N, 77.17°WMahantango — 40.42°N, 77.00°WLittle Cedar — 42.00°N, 91.00°WLittle Cedar — 41.83°N, 90.23°WJaycox — 42.85°N, 77.83°WJaycox — 42.89°N, 77.70°WJaycox — 42.82°N, 77.29°WJaycox — 42.76°N, 76.97°WAouinet Ouenine II — 28.08°N, 13.00°ECano del Oeste — 10.50°N, 72.50°WCano del Oeste — 10.58°N, 72.42°WMariposas — 41.13°N, 1.07°WSilica — 41.12°N, 84.85°WSilica — 41.70°N, 83.75°WGeneseo — 42.65°N, 75.38°WGeneseo — 42.64°N, 75.43°WOnondaga — 39.73°N, 78.08°WIdri — 27.50°N, 13.50°EFloresta-Labateca — 5.85°N, 72.88°WLe Fret — 48.40°N, 4.48°WVerveur — 48.40°N, 4.48°WKerdreolet — 48.40°N, 4.48°WBolast — 48.40°N, 4.48°WKergarvan — 48.40°N, 4.48°WMarcellus — 42.51°N, 74.05°WAhrdorf — 50.22°N, 6.70°EThunder Bay Limestone — 45.06°N, 83.43°WPotter Farm — 45.08°N, 83.52°W

Loading coastlines…

The named rock units Greenops has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 further formations hold fewer occurrences each and are not listed. 1 occurrence has no formation on record, which is common for older literature.

Greenops and its relatives

Devonian

Where Greenops and its relatives were recorded in the Devonian.

Found in the same rock

586 taxa

The Paleobiology Database records 148 sites for Greenops, 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

35 references

Each of the 193 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. 23 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 content2

Picture of Greenops

Credit
Jsnrice
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 itAcastidae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Delo 1935