Pachycrommium clarki

Pachycrommium clarki

via iDigBio · CC0 · 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
PachycrommiumPBDB
Diet
grazerPBDB, for Ampullinoidea
Life habit
epifaunalPBDB, for Ampullinoidea
Motility
actively mobilePBDB, for Ampullinoidea
Vision
limitedPBDB, for Gastropoda

Time the record covers

At most 23 million years on record.

Every occurrence read is dated to somewhere between 56 Mya and 33.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Paleocene — about 0 of 83 occurrencesEocene — about 83 of 83 occurrencesEoceneOligocene — about 0 of 83 occurrences57–56 Mya — about 0.9 occurrences56–55 Mya — about 3 occurrences55–54 Mya — about 3 occurrences54–53 Mya — about 3 occurrences53–53 Mya — about 3 occurrences53–52 Mya — about 3 occurrences52–51 Mya — about 3 occurrences51–50 Mya — about 3 occurrences50–50 Mya — about 3 occurrences50–49 Mya — about 3 occurrences49–48 Mya — about 3 occurrences48–47 Mya — about 6 occurrences47–46 Mya — about 6 occurrences46–46 Mya — about 6 occurrences46–45 Mya — about 6 occurrences45–44 Mya — about 6 occurrences44–43 Mya — about 6 occurrences43–43 Mya — about 6 occurrences43–42 Mya — about 6 occurrences42–41 Mya — about 6 occurrences41–40 Mya — about 0.9 occurrences40–40 Mya — about 0.3 occurrences40–39 Mya — about 0.3 occurrences39–38 Mya — about 0.3 occurrences38–37 Mya — about 0.2 occurrences37–36 Mya — about 0.1 occurrences36–36 Mya — about 0.1 occurrences36–35 Mya — about 0.1 occurrences35–34 Mya — about 0.1 occurrences34–33 Mya — about 0.0 occurrences56.5 Mya33.4 Mya

83 occurrences of Pachycrommium clarki on record, most of them in the Eocene. 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

83 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

19 formations

Llajas — 34.31°N, 118.67°WLlajas — 34.32°N, 118.63°WLlajas — 34.23°N, 118.76°WJuncal — 34.77°N, 119.15°WJuncal — 34.47°N, 119.02°WJuncal — 34.40°N, 118.48°WJuncal — 34.56°N, 118.72°WJuncal — 34.55°N, 118.73°WMatilija — 34.54°N, 118.75°WMatilija — 34.54°N, 118.74°WMatilija — 34.56°N, 120.19°WManiobra — 33.60°N, 115.66°WSanta Susana — 34.29°N, 118.69°WSanta Susana — 34.25°N, 118.74°WRoseburg — 43.01°N, 123.91°WRoseburg — 43.27°N, 123.45°WRoseburg — 43.24°N, 123.42°WBushnell Rock — 43.27°N, 123.15°WSantiago — 33.77°N, 117.68°WSantiago — 33.76°N, 117.77°WFlournoy — 43.28°N, 123.08°WFlournoy — 43.26°N, 123.03°WColdwater — 34.60°N, 119.25°WBateque — 26.67°N, 112.94°WUnnamed — 33.24°N, 119.47°WSan Juan — 16.59°N, 92.89°WCrescent — 47.73°N, 122.85°WAvenal — 35.88°N, 120.10°WSan Emigdio — 34.92°N, 119.30°WCozy Dell — 34.50°N, 119.92°WTyee — 43.74°N, 123.19°WScripps — 32.83°N, 117.12°W

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

Pachycrommium clarki and its relatives

Eocene

Where Pachycrommium clarki and its relatives were recorded in the Eocene.

Found in the same rock

351 taxa

The Paleobiology Database records 81 sites for Pachycrommium clarki, 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

20 references

Each of the 83 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. 8 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 Pachycrommium clarki

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itPachycrommium through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Stewart 1927)