Sycostoma

Sycostoma

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
MelongenidaePBDB
Diet
carnivorePBDB, for Melongenidae
Life habit
epifaunalPBDB, for Melongenidae
Motility
actively mobilePBDB, for Melongenidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 65 million years on record.

The record covers at least 66 Mya to 129 ka. No occurrence read is dated outside 72.2 Mya to 11.7 ka.

Late Cretaceous — about 1 of 74 occurrencesLate CretaceousPaleocene — about 25 of 74 occurrencesPaleoceneEocene — about 46 of 74 occurrencesEoceneOligocene — about 0 of 74 occurrencesMiocene — about 0 of 74 occurrencesPliocene — about 0 of 74 occurrencesPleistocene — about 2 of 74 occurrences74–71 Mya — about 0.2 occurrences71–69 Mya — about 0.4 occurrences69–66 Mya — about 0.4 occurrences66–64 Mya — about 3 occurrences64–61 Mya — about 4 occurrences61–59 Mya — about 9 occurrences59–56 Mya — about 7 occurrences56–54 Mya — about 4 occurrences54–52 Mya — about 3 occurrences52–49 Mya — about 3 occurrences49–47 Mya — about 5 occurrences47–44 Mya — about 6 occurrences44–42 Mya — about 6 occurrences42–39 Mya — about 9 occurrences39–37 Mya — about 8 occurrences37–34 Mya — about 5 occurrences34–32 Mya — about 0.9 occurrences2.5–0 Mya — about 2 occurrences66 Mya129 ka74 Mya0 Mya

74 occurrences of Sycostoma 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

74 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

25 formations

Santa Susana — 34.05°N, 118.63°WSanta Susana — 34.07°N, 118.55°WSanta Susana — 34.25°N, 118.73°WBarton Beds — 50.67°N, 1.57°WBarton Beds — 50.78°N, 1.73°WBarton Beds — 50.85°N, 1.78°WBarton Beds — 50.74°N, 1.69°WSelsey — 51.02°N, 1.32°WSelsey — 50.73°N, 0.78°WSelsey — 50.80°N, 1.21°WBarton Clay — 50.74°N, 1.69°WMartinez — 38.00°N, 122.20°WWeches — 31.56°N, 94.50°WWeches — 31.21°N, 96.02°WWeches — 31.59°N, 94.84°WWeches — 31.22°N, 96.06°WSables a Nummulites variolarius — 49.25°N, 2.50°EReklaw — 30.88°N, 95.38°WReklaw — 30.80°N, 96.72°WLondon Clay — 50.89°N, 1.28°WEwekoro — 6.92°N, 3.19°ELodo — 36.60°N, 120.69°WLellinge Greensand — 55.71°N, 12.60°EShiratake — 32.42°N, 130.17°EEarnley — 51.08°N, 1.17°WCalcaire de Vigny — 49.07°N, 1.92°EAgatdal — 70.60°N, 53.05°WCzarnorzeki Beds — 49.77°N, 21.93°ETepetate — 31.28°N, 116.40°WLópez de Bertodano — 64.25°S, 56.75°WBruxelles — 50.83°N, 4.33°EBruxellian — 51.17°N, 3.33°ELisbon — 31.30°N, 86.48°WSeguin — 30.33°N, 97.37°WQuiriquina — 36.72°S, 73.12°W

Loading coastlines…

The named rock units Sycostoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. One further formation holds fewer occurrences and is not listed. 11 occurrences have no formation on record, which is common for older literature.

Sycostoma and its relatives

Eocene

Where Sycostoma and its relatives were recorded in the Eocene.

Found in the same rock

2,126 taxa

The Paleobiology Database records 60 sites for Sycostoma, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

34 references

Each of the 74 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. 22 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 Sycostoma

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

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. Cox 1931