Carcinoplax

SSR2000 · CC BY-SA 3.0 · 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- Sits inside
- GoneplacidaePBDB
- Diet
- carnivorePBDB, for Decapoda
- Life habit
- infaunalPBDB, for Goneplacidae
- Motility
- actively mobilePBDB, for Malacostraca
- Vision
- well-developedPBDB, for Malacostraca
Time the record covers
At least 35 million years on record.
The record covers at least 37.71 Mya to 1.8 Mya. No occurrence read is dated outside 56 Mya to 774 ka.
41 occurrences of Carcinoplax on record, most of them in the Miocene. 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
41 occurrences- Eocene5%
- Miocene61%
- Pliocene24%
- Pleistocene10%
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
16 formations
- Maja Formation · Shimajiri Group4
- Ten-no Formation · Kakegawa Group3
- Tano Formation · Miyazaki Group2
- Aya Formation · Miyazaki Group2
- Soga Formation · Kakegawa Group2
- Island Sandstone Formation1
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The named rock units Carcinoplax has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.
Carcinoplax and its relatives
MioceneWhere Carcinoplax and its relatives were recorded in the Miocene.
Found in the same rock
72 taxa- Miosesarma japonica2 sites
- Raninoides2 sites
- Trichopeltarion huziokai2 sites
- Tritodynamia globosa2 sites
- Amydrocarcinus dantei1 site
- Anatolikos itoigawai1 site
- Bryozoa1 site
- Calappa1 site
- Calappa pustulosa1 site
- Calappilia hondoensis1 site
- Cancer (Cancer) japonicus1 site
- Cetotheriidae1 site
- Cibicides1 site
- Cirsotrema1 site
- Cryptolutea warreni1 site
- Daldorfia nagashimai1 site
- Dardanus mexicanus1 site
- Demania1 site
- Demania pilipinas1 site
- Duplipecten1 site
- Eucalliax yatsuoensis1 site
- Eucrate1 site
- Hexapus granuliformis1 site
- Iphiculus sexspinosus1 site
The Paleobiology Database records 28 sites for Carcinoplax, 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
10 references- Cenozoic Decapod Crustacea from Southwest Japan20
- Decapod crustaceans from the Miocene Kukinaga Group, Tanegashima Island, Kyushu, Japan11
- New report of decapod and isopod crustaceans from the Lower-Middle Pleistocene of Montalbano Jonico, Matera (Basilicata, southern Italy)3
- Neogene and Quaternary Ghost Shrimps and Crabs (Crustacea: Decapoda) from the Philippines1
- Decapod crustaceans (Brachyura) from the Eocene Tepetate Formation, Baja California Sur, Mexico1
- Miocene and Pleistocene Crabs (Crustacea, Decapoda) from Sabah and Sarawak1
- Late Eocene decapod Crustacea from north Westland, South Island, New Zealand1
- Decapod crustaceans from the Miocene Mizunami Group, central Japan. Part 2. Section Oxyrhyncha, Cancridea and Brachyrhyncha1
- Miocene Cancer (Brachyura) of Japan1
- The fossil decapod Crustacea of New Zealand and the evolution of the Order Decapoda1
Each of the 41 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 content2

Picture of Carcinoplax
- Source
- Wikidata/Commons
- Credit
- SSR2000
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- Francesco Coldesina
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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 itGoneplacidae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Milne-Edwards 1852