Millerosteus minor

Millerosteus is an extinct genus of coccosteid arthrodire placoderm from the Early Givetian stage of the Middle Devonian period. Fossils are found in Orkney and Caithness, Scotland. It was a small placoderm with a body length of 14 cm (5.5 in). Millerosteus is one of the few arthrodires known from specimens preserving the entire skeleton.

Millerosteus minor

Smokeybjb · CC BY-SA 3.0 · 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
MillerosteusPBDB
Diet
carnivorePBDB, for Arthrodira
Life habit
nektonicPBDB, for Arthrodira
Motility
actively mobilePBDB, for Arthrodira

Time the record covers

At most 12 million years on record.

Every occurrence read is dated to somewhere between 393.47 Mya and 382.31 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Devonian — about 25 of 25 occurrencesDevonian394–393 Mya — about 1 occurrence393–393 Mya — about 2 occurrences393–392 Mya — about 2 occurrences392–392 Mya — about 2 occurrences392–392 Mya — about 2 occurrences392–391 Mya — about 2 occurrences391–391 Mya — about 2 occurrences391–390 Mya — about 2 occurrences390–390 Mya — about 2 occurrences390–390 Mya — about 2 occurrences390–389 Mya — about 2 occurrences389–389 Mya — about 2 occurrences389–388 Mya — about 2 occurrences388–388 Mya — about 2 occurrences388–387 Mya — about 0.1 occurrences387–387 Mya — about 0.1 occurrences387–387 Mya — about 0.1 occurrences387–386 Mya — about 0.1 occurrences386–386 Mya — about 0.1 occurrences386–385 Mya — about 0.1 occurrences385–385 Mya — about 0.1 occurrences385–385 Mya — about 0.1 occurrences385–384 Mya — about 0.1 occurrences384–384 Mya — about 0.1 occurrences384–383 Mya — about 0.1 occurrences383–383 Mya — about 0.1 occurrences383–383 Mya — about 0.1 occurrences383–382 Mya — about 0.1 occurrences394 Mya381.8 Mya

25 occurrences of Millerosteus minor 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

2 formations

Rousay — 59.10°N, 3.09°WRousay — 59.01°N, 3.01°WRousay — 59.01°N, 2.92°WRousay — 58.99°N, 2.80°WRousay — 58.74°N, 2.93°WRousay — 59.20°N, 3.08°WRousay — 59.13°N, 3.03°WRousay — 59.17°N, 3.00°WRousay — 59.28°N, 3.02°WRousay — 59.33°N, 3.05°WRousay — 59.30°N, 2.90°WRousay — 59.37°N, 2.89°WRousay — 59.36°N, 2.41°WRousay — 59.30°N, 2.44°WMey Flagstone — 58.60°N, 3.53°W

Loading coastlines…

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

Millerosteus minor and its relatives

Devonian

Where Millerosteus minor and its relatives were recorded in the Devonian.

Found in the same rock

8 taxa

The Paleobiology Database records 25 sites for Millerosteus minor, 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

2 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 Millerosteus minor

Credit
Smokeybjb
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
Free Standard
Commercial use
cannot be read from the licence given — check the record

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 itMillerosteus through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Miller 1858