Trichodactylidae

Trichodactylidae is a family of crabs, in its own superfamily, Trichodactyloidea. They are all freshwater animals from Central and South America, including some offshore islands, such as Ilhabela, São Paulo. Only one of the 50 species is known from the fossil record, Sylviocarcinus piriformis from the Miocene of Colombia. The family contains 15 genera in two subfamilies:Subfamily Dilocarcininae Pretzmann, 1978Bottiella Magalhães & Türkay, 1996 Dilocarcinus H. Milne-Edwards, 1853 Forsteria Bott, 1969 Fredilocarcinus Pretzmann, 1978 Goyazana Bott, 1969 Melocarcinus Magalhães & Türkay, 1996 Moreirocarcinus Magalhães & Türkay, 1996 Poppiana Bott, 1969 Rotundovaldivia Pretzmann, 1968 Sylviocarcinus H. Milne-Edwards, 1853 Valdivia White, 1847 Zilchiopsis Bott, 1969Subfamily Trichodactylinae H. Milne-Edwards, 1853Avotrichodactylus Pretzmann, 1968 Rodriguezia Bott, 1969 Trichodactylus Latreille, 1829

Trichodactylidae

François-Louis Laporte, comte de Castelnau · 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
Sits inside
TrichodactyloideaPBDB
Diet
carnivorePBDB, for Decapoda
Life habit
epifaunalPBDB, for Decapoda
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At least 26 million years on record.

The record covers at least 37.71 Mya to 11.63 Mya. No occurrence read is dated outside 48.07 Mya to 2.58 Mya.

Eocene — about 7 of 36 occurrencesEoceneOligocene — about 9 of 36 occurrencesOligoceneMiocene — about 20 of 36 occurrencesMiocenePliocene — about 0 of 36 occurrencesPleistocene — about 0 of 36 occurrences49–47 Mya — about 0.4 occurrences47–46 Mya — about 0.9 occurrences46–44 Mya — about 0.9 occurrences44–43 Mya — about 0.9 occurrences43–41 Mya — about 0.9 occurrences41–40 Mya — about 0.9 occurrences40–38 Mya — about 0.9 occurrences38–36 Mya — about 0.6 occurrences36–35 Mya — about 0.6 occurrences35–33 Mya — about 1.0 occurrences33–32 Mya — about 2 occurrences32–30 Mya — about 2 occurrences30–28 Mya — about 2 occurrences28–27 Mya — about 1 occurrence27–25 Mya — about 0.8 occurrences25–24 Mya — about 0.8 occurrences24–22 Mya — about 0.4 occurrences14–13 Mya — about 5 occurrences13–11 Mya — about 8 occurrences11–9.6 Mya — about 3 occurrences9.6–8.0 Mya — about 2 occurrences8.0–6.4 Mya — about 1 occurrence6.4–4.8 Mya — about 0.7 occurrences4.8–3.2 Mya — about 0.2 occurrences3.2–1.7 Mya — about 0.1 occurrences37.71 Mya11.63 Mya49 Mya1.7 Mya

36 occurrences of Trichodactylidae 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

36 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

Pozo — 7.33°S, 74.95°WPozo — 7.33°S, 74.95°WPozo — 6.57°S, 76.27°WLa Victoria — 3.27°N, 75.16°WLa Victoria — 3.36°N, 75.16°WLa Victoria — 3.37°N, 75.15°WLa Victoria — 3.34°N, 75.15°WVillavieja — 3.23°N, 75.18°WVillavieja — 3.26°N, 75.17°WPebas — 7.36°S, 74.96°WChambira — 7.32°S, 74.93°WIpururo — 7.37°S, 74.96°W

Loading coastlines…

The named rock units Trichodactylidae 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.

Trichodactylidae and its relatives

Miocene

Where Trichodactylidae and its relatives were recorded in the Miocene.

Found in the same rock

200 taxa

The Paleobiology Database records 33 sites for Trichodactylidae, 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

4 references

Each of the 36 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 Trichodactylidae

Credit
François-Louis Laporte, comte de Castelnau
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Trichodactylidae 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.

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 itTrichodactyloidea through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Milne-Edwards 1853