Eastmanosteus

Eastmanosteus is a fossil genus of dunkleosteid placoderms. It was closely related to the giant Dunkleosteus, but differed from that genus in size and in possessing a distinctive tuberculated bone ornament, a differently shaped nuchal plate, and a more zig-zagging course of the sutures of the skull roof.

Eastmanosteus

Ghedoghedo · 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
DinichthyidaePBDB
Diet
carnivorePBDB, for Arthrodira
Life habit
nektonicPBDB, for Arthrodira
Motility
actively mobilePBDB, for Arthrodira

Time the record covers

At least 3.3 million years on record.

The record covers at least 382.31 Mya to 379 Mya. No occurrence read is dated outside 387.95 Mya to 375.2 Mya.

Devonian — about 7 of 7 occurrencesDevonian388–388 Mya — about 0.1 occurrences388–387 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 occurrences385–384 Mya — about 0.1 occurrences384–384 Mya — about 0.1 occurrences384–383 Mya — about 0.1 occurrences383–383 Mya — about 0.1 occurrences383–382 Mya — about 0.1 occurrences382–382 Mya — about 0.3 occurrences382–382 Mya — about 0.4 occurrences382–381 Mya — about 0.4 occurrences381–381 Mya — about 0.4 occurrences381–380 Mya — about 0.4 occurrences380–380 Mya — about 0.4 occurrences380–379 Mya — about 0.4 occurrences379–379 Mya — about 0.4 occurrences379–378 Mya — about 0.4 occurrences378–378 Mya — about 0.4 occurrences378–377 Mya — about 0.4 occurrences377–377 Mya — about 0.4 occurrences377–377 Mya — about 0.4 occurrences377–376 Mya — about 0.4 occurrences376–376 Mya — about 0.4 occurrences376–375 Mya — about 0.3 occurrences382.31 Mya379 Mya388.4 Mya374.7 Mya

7 occurrences of Eastmanosteus 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

7 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

Gogo — 18.16°S, 124.30°EGogo — 18.30°S, 126.50°EBahram — 30.76°N, 57.03°EMilwaukee — 43.10°N, 87.90°W

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The named rock units Eastmanosteus 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.

Eastmanosteus and its relatives

Devonian

Where Eastmanosteus and its relatives were recorded in the Devonian.

Found in the same rock

70 taxa

The Paleobiology Database records 5 sites for Eastmanosteus, 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

6 references

Each of the 7 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 Eastmanosteus

Credit
Ghedoghedo
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Eastmanosteus 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 itDinichthyidae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Obruchev 1964