Palaemonidae

Palaemonidae is a family of shrimp in the order Decapoda. Many species are carnivores that eat small invertebrates, and can be found in any aquatic habitat except the deep sea. One significant genus is Macrobrachium, which contains commercially fished species. Others inhabit coral reefs, where they associate with certain invertebrates, such as sponges, cnidarians, mollusks, and echinoderms, as cleaner shrimps, parasites, or commensals. They generally feed on detritus, though some are carnivores and hunt tiny animals.

Palaemonidae

The original uploader was Aquaimages at English Wikipedia . · CC BY-SA 2.5 · 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
PalaemonoideaPBDB
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 201 million years on record.

The record covers at least 239.48 Mya to 37.71 Mya. No occurrence read is dated outside 241.464 Mya to 33.9 Mya.

Middle Triassic — about 1 of 23 occurrencesLate Triassic — about 0 of 23 occurrencesEarly Jurassic — about 0 of 23 occurrencesMiddle Jurassic — about 0 of 23 occurrencesLate Jurassic — about 0 of 23 occurrencesEarly Cretaceous — about 10 of 23 occurrencesEarly CretaceousLate Cretaceous — about 2 of 23 occurrencesLate CretaceousPaleocene — about 0 of 23 occurrencesEocene — about 10 of 23 occurrencesEoceneOligocene — about 0 of 23 occurrences246–238 Mya — about 1 occurrence145–138 Mya — about 0.3 occurrences138–130 Mya — about 0.3 occurrences130–123 Mya — about 0.9 occurrences123–116 Mya — about 4 occurrences116–109 Mya — about 3 occurrences109–102 Mya — about 2 occurrences102–95 Mya — about 0.2 occurrences87–80 Mya — about 0.5 occurrences80–73 Mya — about 1 occurrence73–66 Mya — about 0.5 occurrences59–51 Mya — about 1.0 occurrences51–44 Mya — about 0.0 occurrences44–37 Mya — about 2 occurrences37–30 Mya — about 7 occurrences239.48 Mya37.71 Mya246 Mya30 Mya

23 occurrences of Palaemonidae on record, most of them in the Early Cretaceous. 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

23 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

Headon Hill — 50.74°N, 1.22°WHeadon Hill — 50.71°N, 1.10°WCrato — 7.13°S, 39.70°WMeissner — 50.88°N, 11.50°EAurisina — 45.78°N, 13.59°ERomualdo — 7.42°S, 39.12°WGreen River — 41.78°N, 110.73°W

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The named rock units Palaemonidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Palaemonidae and its relatives

Early Cretaceous

Where Palaemonidae and its relatives were recorded in the Early Cretaceous.

Found in the same rock

230 taxa

The Paleobiology Database records 16 sites for Palaemonidae, 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

12 references

Each of the 23 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 Palaemonidae

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

No 3D scan of Palaemonidae 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 itPalaemonoidea through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Rafinesque 1815