Douglasocaris

Douglasocaris is a genus of bivalved malacostracan, sometimes classified instead as either a phyllocarid or a notostracan, from the Middle Ordovician Douglas Lake Member of the Lenoir Limestone from Douglas Dam, Tennessee, United States.

Douglasocaris

Retallack · CC BY-SA 4.0 · 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
ArthropodaPBDB
Motility
actively mobilePBDB, for Arthropoda

Time the record covers

At most 9.8 million years on record.

The one occurrence read is dated to somewhere between 468 Mya and 458.2 Mya, which is a dating window rather than a span.

Ordovician — about 1 of 1 occurrenceOrdovician468–468 Mya — about 0.0 occurrences468–467 Mya — about 0.0 occurrences467–467 Mya — about 0.0 occurrences467–467 Mya — about 0.0 occurrences467–466 Mya — about 0.0 occurrences466–466 Mya — about 0.0 occurrences466–466 Mya — about 0.0 occurrences466–465 Mya — about 0.0 occurrences465–465 Mya — about 0.0 occurrences465–465 Mya — about 0.0 occurrences465–464 Mya — about 0.0 occurrences464–464 Mya — about 0.0 occurrences464–463 Mya — about 0.0 occurrences463–463 Mya — about 0.0 occurrences463–463 Mya — about 0.0 occurrences463–462 Mya — about 0.0 occurrences462–462 Mya — about 0.0 occurrences462–462 Mya — about 0.0 occurrences462–461 Mya — about 0.0 occurrences461–461 Mya — about 0.0 occurrences461–461 Mya — about 0.0 occurrences461–460 Mya — about 0.0 occurrences460–460 Mya — about 0.0 occurrences460–460 Mya — about 0.0 occurrences460–459 Mya — about 0.0 occurrences459–459 Mya — about 0.0 occurrences459–458 Mya — about 0.0 occurrences458–458 Mya — about 0.0 occurrences468.5 Mya457.7 Mya

1 occurrence of Douglasocaris on record, most of them in the Ordovician. 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

1 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

1 formation

Blackford — 35.96°N, 83.54°W

Loading coastlines…

The named rock units Douglasocaris has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Douglasocaris and its relatives

Ordovician

Where Douglasocaris and its relatives were recorded in the Ordovician.

Found in the same rock

2 taxa

The Paleobiology Database records 1 site for Douglasocaris, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

1 reference

Each of the 1 occurrence 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Douglasocaris

Credit
Retallack
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Douglasocaris was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itArthropoda through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.