Tesseraspis

Tesseraspis is a Lowermost Devonian fish characteristic of the Traquairaspis Fish Zone.

No picture of Tesseraspis was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tesseraspis, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
TesseraspididaePBDB
Motility
actively mobilePBDB, for Chordata

Time the record covers

At most 9.7 million years on record.

Every occurrence read is dated to somewhere between 422.7 Mya and 413.02 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Silurian — about 2 of 8 occurrencesSilurianDevonian — about 6 of 8 occurrencesDevonian423–422 Mya — about 0.1 occurrences422–422 Mya — about 0.2 occurrences422–422 Mya — about 0.2 occurrences422–421 Mya — about 0.2 occurrences421–421 Mya — about 0.2 occurrences421–421 Mya — about 0.2 occurrences421–420 Mya — about 0.2 occurrences420–420 Mya — about 0.2 occurrences420–420 Mya — about 0.2 occurrences420–419 Mya — about 0.4 occurrences419–419 Mya — about 0.4 occurrences419–419 Mya — about 0.4 occurrences419–418 Mya — about 0.4 occurrences418–418 Mya — about 0.4 occurrences418–418 Mya — about 0.4 occurrences418–417 Mya — about 0.4 occurrences417–417 Mya — about 0.4 occurrences417–416 Mya — about 0.3 occurrences416–416 Mya — about 0.3 occurrences416–416 Mya — about 0.3 occurrences416–415 Mya — about 0.3 occurrences415–415 Mya — about 0.3 occurrences415–415 Mya — about 0.3 occurrences415–414 Mya — about 0.3 occurrences414–414 Mya — about 0.3 occurrences414–414 Mya — about 0.3 occurrences414–413 Mya — about 0.3 occurrences413–413 Mya — about 0.2 occurrences423.2 Mya412.5 Mya

8 occurrences of Tesseraspis 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

8 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

6 formations

Severnaya Zemlya — 79.50°N, 96.00°EPsammosteus Limestone — 52.53°N, 2.48°WRaglan Marl — 51.71°N, 2.51°WTyver — 48.98°N, 25.71°ETilze — 55.55°N, 24.10°ELapes — 55.27°N, 24.81°E

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The named rock units Tesseraspis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Tesseraspis and its relatives

Devonian

Where Tesseraspis and its relatives were recorded in the Devonian.

Found in the same rock

43 taxa

The Paleobiology Database records 7 sites for Tesseraspis, 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 8 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 content0

No picture of Tesseraspis was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tesseraspis, or no answer at all. This entry cannot say which.

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itTesseraspididae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Wills 1936