Bathynotus

Bathynotus is a genus of trilobites of the family Chengkouaspidae. Its fossils have been found in the paleocontinents Laurentia, Gondwana, and - doubtfully - Siberia. It is characterized by a very wide axis in the thorax and an enlarged 11th segment that bears a long, backwardly directed spine on each side. Additionally, the 12th and 13th segments are narrow and fuse with the edge of the spine of the 11th segment.

Bathynotus

James Hall · 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
BathynotidaePBDB
Diet
deposit feederPBDB, for Redlichiida
Life habit
low-level epifaunalPBDB, for Redlichiida
Motility
fast-movingPBDB, for Redlichiida
Environment
marinePBDB, for Trilobita

Time the record covers

At most 8.8 million years on record.

Every occurrence read is dated to somewhere between 515.3 Mya and 506.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 12 of 12 occurrencesCambrian515–515 Mya — about 0.2 occurrences515–515 Mya — about 0.3 occurrences515–514 Mya — about 0.4 occurrences514–514 Mya — about 0.6 occurrences514–514 Mya — about 0.6 occurrences514–514 Mya — about 0.6 occurrences514–513 Mya — about 0.6 occurrences513–513 Mya — about 0.6 occurrences513–513 Mya — about 0.6 occurrences513–512 Mya — about 0.6 occurrences512–512 Mya — about 0.6 occurrences512–512 Mya — about 0.6 occurrences512–511 Mya — about 0.6 occurrences511–511 Mya — about 0.6 occurrences511–511 Mya — about 0.6 occurrences511–510 Mya — about 0.6 occurrences510–510 Mya — about 0.6 occurrences510–510 Mya — about 0.5 occurrences510–509 Mya — about 0.2 occurrences509–509 Mya — about 0.2 occurrences509–509 Mya — about 0.2 occurrences509–508 Mya — about 0.2 occurrences508–508 Mya — about 0.2 occurrences508–508 Mya — about 0.2 occurrences508–507 Mya — about 0.2 occurrences507–507 Mya — about 0.2 occurrences507–507 Mya — about 0.2 occurrences507–506 Mya — about 0.1 occurrences515.8 Mya506 Mya

12 occurrences of Bathynotus on record, most of them in the Cambrian. 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

12 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

3 formations

Kaili — 26.73°N, 108.42°EPioche Shale — 37.53°N, 114.73°WPioche Shale — 37.62°N, 114.72°WPioche Shale — 37.61°N, 114.76°WParker Slate — 44.48°N, 73.21°WParker Slate — 44.74°N, 73.16°W

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

Bathynotus and its relatives

Cambrian

Where Bathynotus and its relatives were recorded in the Cambrian.

Found in the same rock

52 taxa

The Paleobiology Database records 7 sites for Bathynotus, 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 12 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 Bathynotus

Credit
James Hall
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Bathynotus 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 itBathynotidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1860