Bryantolepis

Bryantolepis is an extinct genus of arthrodire placoderm fish from the Early Devonian period found in northern USA, and currently consists of two species, Bryantolepis brachycephala and Bryantolepis williamsi. The genus is known from multiple parts of the skull roof, the suborbital, endocranium, and trunk shield.

Bryantolepis

SeismicShrimp · CC BY 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
ActinolepididaePBDB
Diet
carnivorePBDB, for Arthrodira
Life habit
nektonicPBDB, for Arthrodira
Motility
actively mobilePBDB, for Arthrodira

Time the record covers

At most 18 million years on record.

Every occurrence read is dated to somewhere between 410.62 Mya and 393.47 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Devonian — about 6 of 6 occurrencesDevonian411–411 Mya — about 0.0 occurrences411–410 Mya — about 0.2 occurrences410–409 Mya — about 0.2 occurrences409–409 Mya — about 0.2 occurrences409–408 Mya — about 0.2 occurrences408–407 Mya — about 0.2 occurrences407–407 Mya — about 0.2 occurrences407–406 Mya — about 0.2 occurrences406–406 Mya — about 0.2 occurrences406–405 Mya — about 0.2 occurrences405–404 Mya — about 0.2 occurrences404–404 Mya — about 0.2 occurrences404–403 Mya — about 0.2 occurrences403–403 Mya — about 0.2 occurrences403–402 Mya — about 0.2 occurrences402–401 Mya — about 0.2 occurrences401–401 Mya — about 0.2 occurrences401–400 Mya — about 0.2 occurrences400–400 Mya — about 0.2 occurrences400–399 Mya — about 0.2 occurrences399–398 Mya — about 0.2 occurrences398–398 Mya — about 0.2 occurrences398–397 Mya — about 0.2 occurrences397–397 Mya — about 0.2 occurrences397–396 Mya — about 0.2 occurrences396–395 Mya — about 0.2 occurrences395–395 Mya — about 0.2 occurrences395–394 Mya — about 0.2 occurrences394–394 Mya — about 0.2 occurrences394–393 Mya — about 0.0 occurrences411.1 Mya393 Mya

6 occurrences of Bryantolepis 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

6 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

Beartooth Butte — 44.95°N, 109.62°WWater Canyon — 41.62°N, 111.66°WWater Canyon — 41.77°N, 111.75°W

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

Bryantolepis and its relatives

Devonian

Where Bryantolepis and its relatives were recorded in the Devonian.

Found in the same rock

51 taxa

The Paleobiology Database records 3 sites for Bryantolepis, 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

3 references

Each of the 6 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Bryantolepis

Credit
SeismicShrimp
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Bryantolepis 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 itActinolepididae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Denison 1958