Crommium andersoni

Crommium andersoni

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
CrommiumPBDB
Diet
carnivorePBDB, for Naticidae
Life habit
semi-infaunalPBDB, for Naticidae
Motility
actively mobilePBDB, for Naticidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 7.9 million years on record.

The record covers at least 56 Mya to 48.07 Mya. No occurrence read is dated outside 66 Mya to 33.9 Mya.

Late Cretaceous — about 0 of 26 occurrencesPaleocene — about 1 of 26 occurrencesPaleoceneEocene — about 25 of 26 occurrencesEoceneOligocene — about 0 of 26 occurrences67–66 Mya — about 0.0 occurrences66–64 Mya — about 0.1 occurrences64–63 Mya — about 0.1 occurrences63–62 Mya — about 0.1 occurrences62–61 Mya — about 0.1 occurrences61–60 Mya — about 0.1 occurrences60–59 Mya — about 0.1 occurrences59–58 Mya — about 0.1 occurrences58–57 Mya — about 0.1 occurrences57–56 Mya — about 0.1 occurrences56–54 Mya — about 0.2 occurrences54–53 Mya — about 0.2 occurrences53–52 Mya — about 0.2 occurrences52–51 Mya — about 0.2 occurrences51–50 Mya — about 0.2 occurrences50–49 Mya — about 0.2 occurrences49–48 Mya — about 1 occurrence48–47 Mya — about 4 occurrences47–45 Mya — about 4 occurrences45–44 Mya — about 4 occurrences44–43 Mya — about 4 occurrences43–42 Mya — about 4 occurrences42–41 Mya — about 4 occurrences41–40 Mya — about 0.1 occurrences40–39 Mya — about 0.1 occurrences39–38 Mya — about 0.1 occurrences38–37 Mya — about 0.1 occurrences37–35 Mya — about 0.1 occurrences35–34 Mya — about 0.1 occurrences34–33 Mya — about 0.0 occurrences56 Mya48.07 Mya66.6 Mya33.3 Mya

26 occurrences of Crommium andersoni 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

26 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

5 formations

Flournoy — 43.28°N, 123.08°WFlournoy — 43.26°N, 123.03°WFlournoy — 43.01°N, 123.91°WDelmar — 33.16°N, 117.21°WDelmar — 32.93°N, 117.25°WDelmar — 32.92°N, 117.26°WMatilija — 34.48°N, 119.30°WLodo — 36.60°N, 120.69°WCapay — 38.77°N, 122.20°W

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

Crommium andersoni and its relatives

Eocene

Where Crommium andersoni and its relatives were recorded in the Eocene.

Found in the same rock

183 taxa

The Paleobiology Database records 26 sites for Crommium andersoni, 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

6 references

Each of the 26 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 Crommium andersoni

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 itCrommium through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dickerson 1914)