Coccosteomorphi

Coccosteomorphi is an extinct clade of arthrodire placoderms within the Eubrachythoraci, armored fish most diverse during the Devonian. Most are considered to be pelagic long-distance swimmers, leading to their widespread distribution beginning from at least the Middle Devonian period.

Coccosteomorphi

Entelognathus · 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
BrachythoraciPBDB
Diet
carnivorePBDB, for Arthrodira
Life habit
nektonicPBDB, for Arthrodira
Motility
actively mobilePBDB, for Arthrodira

Time the record covers

At least 34 million years on record.

The record covers at least 393.47 Mya to 358.86 Mya. No occurrence read is dated outside 410.62 Mya to 323.4 Mya.

Devonian — about 99 of 100 occurrencesDevonianCarboniferous — about 1 of 100 occurrencesCarboniferous412–409 Mya — about 0.1 occurrences409–406 Mya — about 0.2 occurrences406–403 Mya — about 0.2 occurrences403–400 Mya — about 0.2 occurrences400–397 Mya — about 1 occurrence397–394 Mya — about 2 occurrences394–391 Mya — about 15 occurrences391–388 Mya — about 20 occurrences388–385 Mya — about 13 occurrences385–382 Mya — about 11 occurrences382–379 Mya — about 20 occurrences379–376 Mya — about 5 occurrences376–373 Mya — about 5 occurrences373–370 Mya — about 2 occurrences370–367 Mya — about 0.6 occurrences367–364 Mya — about 1.0 occurrences364–361 Mya — about 2 occurrences361–358 Mya — about 1 occurrence358–355 Mya — about 0.1 occurrences355–352 Mya — about 0.1 occurrences352–349 Mya — about 0.1 occurrences349–346 Mya — about 0.1 occurrences346–343 Mya — about 0.1 occurrences343–340 Mya — about 0.1 occurrences340–337 Mya — about 0.1 occurrences337–334 Mya — about 0.1 occurrences334–331 Mya — about 0.1 occurrences331–328 Mya — about 0.1 occurrences328–325 Mya — about 0.1 occurrences325–322 Mya — about 0.0 occurrences393.47 Mya358.86 Mya412 Mya322 Mya

100 occurrences of Coccosteomorphi 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

100 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

34 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°WGogo — 18.62°S, 125.95°EGogo — 18.68°S, 125.71°EGogo — 18.30°S, 126.50°EGogo — 18.16°S, 124.30°EKellwasserkalk — 51.08°N, 9.13°ELybster Flagstone — 58.47°N, 3.46°WLybster Flagstone — 57.83°N, 4.18°WLybster Flagstone — 57.68°N, 2.34°WLybster Flagstone — 57.64°N, 3.03°WLybster Flagstone — 57.68°N, 4.03°WBurtnieki — 58.10°N, 25.55°ENarva — 57.55°N, 25.29°EAruküla — 59.37°N, 25.08°EAruküla — 57.55°N, 25.28°EOberer Plattenkalk — 50.99°N, 7.16°EMelby — 60.29°N, 1.70°WSpital Flagstone — 58.47°N, 3.42°WRockport Quarry Limestone — 45.20°N, 83.39°WGydo — 33.30°S, 21.83°EChemung — 41.68°N, 76.71°WKiltorcan — 52.45°N, 7.18°WTordalen — 78.67°N, 16.22°ENarva — 59.38°N, 28.19°EPolotsk — 51.88°N, 26.85°EOld Red Sandstone — 51.50°N, 2.78°WOhio Shale — 41.45°N, 81.77°WMartin — 35.25°N, 111.61°WUpper Stromness Flagstones — 59.08°N, 3.32°WCrosskirk Bay — 57.61°N, 3.12°WHam-Scarfskerry Flagstone — 58.62°N, 3.59°W

Loading coastlines…

The named rock units Coccosteomorphi has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 further formations hold fewer occurrences each and are not listed. 4 occurrences have no formation on record, which is common for older literature.

Coccosteomorphi and its relatives

Devonian

Where Coccosteomorphi and its relatives were recorded in the Devonian.

Found in the same rock

485 taxa

The Paleobiology Database records 78 sites for Coccosteomorphi, 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

34 references

Each of the 100 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. 22 further references are not listed. 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 Coccosteomorphi

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

No 3D scan of Coccosteomorphi 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 itBrachythoraci through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.