Microstelma

Microstelma is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Zebinidae.

Microstelma

Natural History Museum Rotterdam · CC BY 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
RissoidaePBDB
Diet
grazerPBDB, for Rissoidae
Life habit
epifaunalPBDB, for Rissoidae
Motility
actively mobilePBDB, for Rissoidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 10 million years on record.

The record covers at least 13.82 Mya to 3.6 Mya. No occurrence read is dated outside 15.98 Mya to 2.58 Mya.

Miocene — about 4 of 26 occurrencesMiocenePliocene — about 22 of 26 occurrencesPliocenePleistocene — about 0 of 26 occurrences16–16 Mya — about 0.2 occurrences16–15 Mya — about 0.2 occurrences15–15 Mya — about 0.2 occurrences15–14 Mya — about 0.2 occurrences14–14 Mya — about 0.1 occurrences7.4–6.9 Mya — about 0.5 occurrences6.9–6.4 Mya — about 0.6 occurrences6.4–5.9 Mya — about 0.6 occurrences5.9–5.4 Mya — about 0.6 occurrences5.4–5.0 Mya — about 2 occurrences5.0–4.5 Mya — about 2 occurrences4.5–4.0 Mya — about 2 occurrences4.0–3.5 Mya — about 3 occurrences3.5–3.0 Mya — about 7 occurrences3.0–2.6 Mya — about 7 occurrences13.82 Mya3.6 Mya16.5 Mya2.1 Mya

26 occurrences of Microstelma on record, most of them in the Pliocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

6 formations

Bowden — 17.88°N, 76.28°WGurabo — 19.48°N, 71.09°WGurabo — 19.40°N, 70.72°WGurabo — 19.58°N, 71.05°WGurabo — 19.30°N, 71.67°WGurabo — 19.51°N, 71.19°WShark Hole Point — 9.04°N, 81.75°WAgueguexquite — 17.58°N, 95.08°WBaitoa — 19.30°N, 70.80°WMao — 19.57°N, 71.17°W

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The named rock units Microstelma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Microstelma and its relatives

Pliocene

Where Microstelma and its relatives were recorded in the Pliocene.

Found in the same rock

637 taxa

The Paleobiology Database records 4 sites for Microstelma, 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Microstelma

Credit
Natural History Museum Rotterdam
Licence
CC BY 4.0
Commercial use
the licence allows it

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

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 itRissoidae through timeFormations of the PlioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Adams 1861