Macron

Macron is a genus of sea snails, marine gastropod molluscs unassigned in the superfamily Buccinoidea.

Macron

Reeve, 1847 · CC0 · 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
BuccinoideaPBDB
Diet
carnivorePBDB, for Neogastropoda
Life habit
epifaunalPBDB, for Neogastropoda
Motility
actively mobilePBDB, for Neogastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 15 million years on record.

The record covers at least 15.98 Mya to 129 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.

Oligocene — about 0 of 22 occurrencesMiocene — about 4 of 22 occurrencesMiocenePliocene — about 2 of 22 occurrencesPliocenePleistocene — about 16 of 22 occurrencesPleistocene24–23 Mya — about 0.1 occurrences23–22 Mya — about 0.2 occurrences22–21 Mya — about 0.2 occurrences21–20 Mya — about 0.2 occurrences20–20 Mya — about 0.2 occurrences20–19 Mya — about 0.2 occurrences19–18 Mya — about 0.2 occurrences18–17 Mya — about 0.2 occurrences17–16 Mya — about 0.2 occurrences16–16 Mya — about 0.2 occurrences16–15 Mya — about 0.2 occurrences15–14 Mya — about 0.2 occurrences14–13 Mya — about 0.2 occurrences13–13 Mya — about 0.2 occurrences13–12 Mya — about 0.2 occurrences12–11 Mya — about 0.2 occurrences11–10 Mya — about 0.2 occurrences10–9.4 Mya — about 0.2 occurrences9.4–8.6 Mya — about 0.2 occurrences8.6–7.8 Mya — about 0.2 occurrences7.8–7.1 Mya — about 0.1 occurrences5.5–4.7 Mya — about 0.2 occurrences4.7–3.9 Mya — about 0.3 occurrences3.9–3.1 Mya — about 0.7 occurrences3.1–2.4 Mya — about 1 occurrence2.4–1.6 Mya — about 1 occurrence1.6–785 ka Mya — about 1 occurrence785 ka–0 Mya — about 13 occurrences15.98 Mya129 ka23.5 Mya0 Mya

22 occurrences of Macron on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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

22 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

10 formations

Palos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WLomita Marl — 33.75°N, 118.30°WUnnamed — 33.24°N, 119.47°WQuaternary terrace — 33.76°N, 118.35°WQuaternary terrace — 33.75°N, 118.30°WYsidro — 28.92°N, 113.95°WNavidad — 33.96°S, 71.87°WIsidro — 26.97°N, 113.18°WMorro Mejillones — 23.12°S, 70.52°WLa Cueva — 34.25°S, 71.80°WTopanga Canyon — 34.12°N, 118.60°W

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The named rock units Macron has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Macron and its relatives

Pleistocene

Where Macron and its relatives were recorded in the Pleistocene.

Found in the same rock

760 taxa

The Paleobiology Database records 16 sites for Macron, 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

16 references

Each of the 22 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. 4 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 Macron

Credit
Reeve, 1847
Licence
CC0
Commercial use
the licence allows it

3D model

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

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

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 itBuccinoidea through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Adams and Adams 1853