Mediargo mathewsoni

Mediargo mathewsoni

via iDigBio · 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
ArgobuccinumPBDB
Diet
carnivorePBDB, for Ranellidae
Life habit
epifaunalPBDB, for Ranellidae
Motility
actively mobilePBDB, for Ranellidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At most 6.9 million years on record.

Every occurrence read is dated to somewhere between 27.3 Mya and 20.45 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Oligocene — about 2 of 4 occurrencesOligoceneMiocene — about 2 of 4 occurrencesMiocene28–27 Mya — about 0.0 occurrences27–27 Mya — about 0.1 occurrences27–27 Mya — about 0.1 occurrences27–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–25 Mya — about 0.1 occurrences25–25 Mya — about 0.1 occurrences25–25 Mya — about 0.1 occurrences25–25 Mya — about 0.1 occurrences25–24 Mya — about 0.1 occurrences24–24 Mya — about 0.1 occurrences24–24 Mya — about 0.1 occurrences24–24 Mya — about 0.1 occurrences24–23 Mya — about 0.1 occurrences23–23 Mya — about 0.1 occurrences23–23 Mya — about 0.2 occurrences23–23 Mya — about 0.2 occurrences23–22 Mya — about 0.2 occurrences22–22 Mya — about 0.2 occurrences22–22 Mya — about 0.2 occurrences22–22 Mya — about 0.2 occurrences22–21 Mya — about 0.2 occurrences21–21 Mya — about 0.2 occurrences21–21 Mya — about 0.2 occurrences21–20 Mya — about 0.2 occurrences20–20 Mya — about 0.0 occurrences27.8 Mya19.9 Mya

4 occurrences of Mediargo mathewsoni on record, most of them in the Oligocene. 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

4 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

2 formations

Jewett — 35.49°N, 118.83°WSan Ramon — 37.95°N, 122.24°W

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The named rock units Mediargo mathewsoni has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Mediargo mathewsoni and its relatives

Oligocene

Where Mediargo mathewsoni and its relatives were recorded in the Oligocene.

Found in the same rock

41 taxa

The Paleobiology Database records 3 sites for Mediargo mathewsoni, 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

2 references

Each of the 4 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 Mediargo mathewsoni

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Mediargo mathewsoni was found in Sketchfab.

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 itArgobuccinum through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Gabb 1866)