Amphigenia

Amphigenia

via iDigBio · CC0 · via iDigBio. 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
AmphigeniinaePBDB
Diet
suspension feederPBDB, for Terebratulida
Life habit
low-level epifaunalPBDB, for Terebratulida
Motility
stationaryPBDB, for Terebratulida
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 11 million years on record.

The record covers at least 393.47 Mya to 382.31 Mya. No occurrence read is dated outside 419.62 Mya to 372.15 Mya.

Silurian — about 0 of 25 occurrencesDevonian — about 25 of 25 occurrencesDevonian421–419 Mya — about 0.2 occurrences419–417 Mya — about 0.4 occurrences417–416 Mya — about 0.4 occurrences416–414 Mya — about 0.4 occurrences414–412 Mya — about 0.4 occurrences412–411 Mya — about 0.4 occurrences411–409 Mya — about 1 occurrence409–407 Mya — about 1 occurrence407–406 Mya — about 1 occurrence406–404 Mya — about 1 occurrence404–402 Mya — about 1 occurrence402–401 Mya — about 1 occurrence401–399 Mya — about 1 occurrence399–398 Mya — about 1 occurrence398–396 Mya — about 1 occurrence396–394 Mya — about 1 occurrence394–393 Mya — about 2 occurrences393–391 Mya — about 2 occurrences391–389 Mya — about 2 occurrences389–388 Mya — about 2 occurrences388–386 Mya — about 0.6 occurrences386–384 Mya — about 0.6 occurrences384–383 Mya — about 0.6 occurrences383–381 Mya — about 0.3 occurrences381–379 Mya — about 0.2 occurrences379–378 Mya — about 0.2 occurrences378–376 Mya — about 0.2 occurrences376–374 Mya — about 0.2 occurrences374–373 Mya — about 0.2 occurrences373–371 Mya — about 0.1 occurrences393.47 Mya382.31 Mya420.6 Mya371.2 Mya

25 occurrences of Amphigenia on record, most of them in the Devonian. 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

25 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

12 formations

Stooping River — 51.00°N, 81.50°WOnondaga — 42.95°N, 76.17°WOnondaga — 42.97°N, 76.14°WKwataboahegan — 51.50°N, 81.00°WMaecuru — 2.00°S, 54.00°WMaecuru — 1.00°S, 55.00°WKanouse — 41.35°N, 74.11°WHuntersville — 36.75°N, 82.25°WPine Hill — 42.33°N, 74.17°WCano Grande — 10.50°N, 72.50°WFloresta-Labateca — 5.85°N, 72.88°WMurray Island — 51.00°N, 81.50°WBois Blanc — 42.98°N, 78.64°WYork River — 48.53°N, 67.04°W

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The named rock units Amphigenia 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.

Amphigenia and its relatives

Devonian

Where Amphigenia and its relatives were recorded in the Devonian.

Found in the same rock

296 taxa

The Paleobiology Database records 18 sites for Amphigenia, 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

11 references

Each of the 25 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 Amphigenia

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itAmphigeniinae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.