Thylacodes squamigerus

Thylacodes squamigerus, common name the scaled worm snail, is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails. This species was previously known as Serpulorbis squamigerus.

Thylacodes squamigerus

Chad King (SIMoN / MBNMS) · Public Domain · 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
Also called
scaled wormsnailPBDB
Sits inside
Vermetus (Thylaeodus)PBDB
Diet
suspension feederPBDB, for Vermetidae
Life habit
epifaunalPBDB, for Vermetidae
Motility
stationary, attachedPBDB, for Vermetidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 2.4 million years on record.

The record covers at least 2.58 Mya to 129 ka. No occurrence read is dated outside 3.6 Mya to 0 Mya.

Pliocene — about 12 of 83 occurrencesPliocenePleistocene — about 71 of 83 occurrencesPleistoceneHolocene — about 0 of 83 occurrences3.7–3.6 Mya — about 0.5 occurrences3.6–3.4 Mya — about 2 occurrences3.4–3.3 Mya — about 2 occurrences3.3–3.1 Mya — about 2 occurrences3.1–3.0 Mya — about 2 occurrences3.0–2.9 Mya — about 2 occurrences2.9–2.7 Mya — about 2 occurrences2.7–2.6 Mya — about 2 occurrences2.6–2.5 Mya — about 1 occurrence2.5–2.3 Mya — about 1 occurrence2.3–2.2 Mya — about 1 occurrence2.2–2.0 Mya — about 1 occurrence2.0–1.9 Mya — about 1 occurrence1.9–1.8 Mya — about 1 occurrence1.8–1.6 Mya — about 1 occurrence1.6–1.5 Mya — about 1 occurrence1.5–1.4 Mya — about 1 occurrence1.4–1.2 Mya — about 1 occurrence1.2–1.1 Mya — about 1 occurrence1.1–957 ka Mya — about 1 occurrence957 ka–820 ka Mya — about 1 occurrence820 ka–683 ka Mya — about 3 occurrences683 ka–547 ka Mya — about 3 occurrences547 ka–410 ka Mya — about 3 occurrences410 ka–273 ka Mya — about 3 occurrences273 ka–137 ka Mya — about 3 occurrences137 ka–0 Mya — about 39 occurrences2.58 Mya129 ka4.1 Mya0 Mya

83 occurrences of Thylacodes squamigerus 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

83 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

11 formations

Palos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.73°N, 118.29°WPalos Verdes Sand — 33.80°N, 118.17°WPalos Verdes Sand — 33.66°N, 117.94°WUnnamed — 33.24°N, 119.51°WUnnamed — 33.24°N, 119.55°WPico — 34.43°N, 118.70°WPico — 34.36°N, 118.56°WLomita Marl — 33.75°N, 118.30°WLomita Marl — 33.74°N, 118.29°WSan Pedro Sand — 33.74°N, 118.28°WQuaternary terrace — 33.75°N, 118.33°WFernando — 34.05°N, 118.25°WFernando — 34.05°N, 118.25°WPalos Verdes — 33.63°N, 117.90°WFoxen Mudstone — 34.89°N, 120.55°WCareaga Sandstone — 34.84°N, 120.41°WTowsley — 34.34°N, 118.54°W

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The named rock units Thylacodes squamigerus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 37 occurrences have no formation on record, which is common for older literature.

Thylacodes squamigerus and its relatives

Pleistocene

Where Thylacodes squamigerus and its relatives were recorded in the Pleistocene.

Found in the same rock

1,179 taxa

The Paleobiology Database records 73 sites for Thylacodes squamigerus, 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

35 references

Each of the 83 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. 23 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 content1

Picture of Thylacodes squamigerus

Credit
Chad King (SIMoN / MBNMS)
Licence
Public Domain
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 itVermetus (Thylaeodus) through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Carpenter 1857)