Amphipoda

Amphipoda is an order of malacostracan crustaceans characterized by sessile eyes and the absence of a carapace. Amphipods comprise more than 10,700 species, are found in almost all aquatic environments, from fresh water to the deepest parts of the ocean, as well as in terrestrial environments, and generally have laterally compressed bodies.

Amphipoda

Michal Maňas · CC BY 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
Also called
amphipodPBDB
Sits inside
PeracaridaPBDB
Diet
omnivorePBDB, for Malacostraca
Life habit
epifaunalPBDB, for Malacostraca
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At least 125 million years on record.

The record covers at least 125.77 Mya to 129 ka. No occurrence read is dated outside 143.1 Mya to 11.7 ka.

Late Jurassic — about 0 of 5 occurrencesEarly Cretaceous — about 2 of 5 occurrencesEarly CretaceousLate Cretaceous — about 1 of 5 occurrencesLate CretaceousPaleocene — about 0 of 5 occurrencesEocene — about 0 of 5 occurrencesOligocene — about 0 of 5 occurrencesMiocene — about 1 of 5 occurrencesMiocenePliocene — about 0 of 5 occurrencesPleistocene — about 1 of 5 occurrences146–141 Mya — about 0.1 occurrences141–136 Mya — about 0.2 occurrences136–131 Mya — about 0.4 occurrences131–127 Mya — about 0.9 occurrences127–122 Mya — about 0.3 occurrences122–117 Mya — about 0.0 occurrences97–92 Mya — about 0.4 occurrences92–88 Mya — about 0.6 occurrences24–19 Mya — about 0.3 occurrences19–15 Mya — about 0.4 occurrences15–9.7 Mya — about 0.3 occurrences4.9–0 Mya — about 1 occurrence125.77 Mya129 ka146 Mya0 Mya

5 occurrences of Amphipoda on record, most of them in the Early Cretaceous. 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

5 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

4 formations

Acredale — 36.79°N, 76.17°WPhra Wihan — 18.49°N, 100.51°EAbu Agag — 23.46°N, 33.02°EWeald Clay — 51.13°N, 0.33°W

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The named rock units Amphipoda has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Amphipoda and its relatives

Early Cretaceous

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

Found in the same rock

104 taxa

The Paleobiology Database records 5 sites for Amphipoda, 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 5 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 Amphipoda

Credit
Michal Maňas
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan of Amphipoda 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 itPeracarida through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Latreille 1816