Hypotetragona

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

On record

Recorded, not inferred
Sits inside
KnoxitidaePBDB
Diet
suspension feederPBDB, for Palaeocopida
Life habit
epifaunalPBDB, for Palaeocopida
Motility
actively mobilePBDB, for Ostracoda
Vision
limitedPBDB, for Ostracoda
Environment
marinePBDB, for Ostracoda

Time the record covers

At least 74 million years on record.

The record covers at least 393.47 Mya to 318.7 Mya. No occurrence read is dated outside 399.5 Mya to 307.4 Mya.

Devonian — about 17 of 21 occurrencesDevonianCarboniferous — about 4 of 21 occurrencesCarboniferous401–398 Mya — about 0.2 occurrences398–395 Mya — about 0.5 occurrences395–392 Mya — about 0.2 occurrences389–385 Mya — about 7 occurrences385–382 Mya — about 9 occurrences344–341 Mya — about 0.6 occurrences341–337 Mya — about 0.9 occurrences337–334 Mya — about 0.6 occurrences334–331 Mya — about 0.3 occurrences331–328 Mya — about 0.3 occurrences328–325 Mya — about 0.3 occurrences325–322 Mya — about 0.1 occurrences322–318 Mya — about 0.0 occurrences318–315 Mya — about 0.3 occurrences315–312 Mya — about 0.3 occurrences312–309 Mya — about 0.3 occurrences309–306 Mya — about 0.1 occurrences393.47 Mya318.7 Mya401 Mya306 Mya

21 occurrences of Hypotetragona 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

21 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

4 formations

Silica — 41.68°N, 83.73°WSilica — 42.13°N, 83.60°WSilica — 42.33°N, 83.03°WFayetteville — 36.00°N, 94.01°WFayetteville — 36.19°N, 94.07°WFayetteville — 36.23°N, 93.11°WSipai — 24.10°N, 109.98°ESama — 43.30°N, 5.68°W

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

Hypotetragona and its relatives

Devonian

Where Hypotetragona and its relatives were recorded in the Devonian.

Found in the same rock

280 taxa

The Paleobiology Database records 10 sites for Hypotetragona, 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

4 references

Each of the 21 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 Hypotetragona was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

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

No 3D scan of Hypotetragona 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itKnoxitidae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Morey 1935