Metacarcinus gracilis

Metacarcinus gracilis

The original uploader was Harmonic at English Wikipedia . · CC BY-SA 2.5 · via Wikidata/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
graceful rock crabPBDB
Sits inside
MetacarcinusPBDB
Diet
carnivorePBDB, for Decapoda
Life habit
semi-infaunalPBDB, for Cancridae
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

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 2 of 19 occurrencesPliocenePleistocene — about 17 of 19 occurrencesPleistoceneHolocene — about 0 of 19 occurrences3.7–3.6 Mya — about 0.1 occurrences3.6–3.4 Mya — about 0.3 occurrences3.4–3.3 Mya — about 0.3 occurrences3.3–3.1 Mya — about 0.3 occurrences3.1–3.0 Mya — about 0.3 occurrences3.0–2.9 Mya — about 0.3 occurrences2.9–2.7 Mya — about 0.3 occurrences2.7–2.6 Mya — about 0.3 occurrences2.6–2.5 Mya — about 0.2 occurrences2.5–2.3 Mya — about 0.2 occurrences2.3–2.2 Mya — about 0.2 occurrences2.2–2.0 Mya — about 0.2 occurrences2.0–1.9 Mya — about 0.2 occurrences1.9–1.8 Mya — about 0.2 occurrences1.8–1.6 Mya — about 0.2 occurrences1.6–1.5 Mya — about 0.2 occurrences1.5–1.4 Mya — about 0.2 occurrences1.4–1.2 Mya — about 0.2 occurrences1.2–1.1 Mya — about 0.2 occurrences1.1–957 ka Mya — about 0.2 occurrences957 ka–820 ka Mya — about 0.2 occurrences820 ka–683 ka Mya — about 1 occurrence683 ka–547 ka Mya — about 2 occurrences547 ka–410 ka Mya — about 2 occurrences410 ka–273 ka Mya — about 2 occurrences273 ka–137 ka Mya — about 2 occurrences137 ka–0 Mya — about 7 occurrences2.58 Mya129 ka4.1 Mya0 Mya

19 occurrences of Metacarcinus gracilis 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

19 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

7 formations

Palos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.75°N, 118.29°WPalos Verdes Sand — 33.78°N, 118.30°WPalos Verdes Sand — 32.70°N, 117.19°WSan Pedro — 32.67°N, 117.14°WSan Pedro — 33.75°N, 118.28°WSan Pedro — 33.75°N, 118.29°WSan Pedro Sand — 33.74°N, 118.28°WTimms Point Silt — 33.73°N, 118.28°WLomita Marl — 33.75°N, 118.30°WSan Diego — 32.54°N, 117.11°WFernando — 34.05°N, 118.26°W

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The named rock units Metacarcinus gracilis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Metacarcinus gracilis and its relatives

Pleistocene

Where Metacarcinus gracilis and its relatives were recorded in the Pleistocene.

Found in the same rock

930 taxa

The Paleobiology Database records 17 sites for Metacarcinus gracilis, 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

5 references

Each of the 19 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 Metacarcinus gracilis

Credit
The original uploader was Harmonic at English Wikipedia .
Licence
CC BY-SA 2.5
Commercial use
the licence allows it

No 3D scan of Metacarcinus gracilis 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 itMetacarcinus through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dana 1852)