Asthenognathus

No picture of Asthenognathus 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 Asthenognathus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
AsthenognathinaePBDB
Diet
detritivorePBDB, for Grapsoidea
Life habit
infaunalPBDB, for Varunidae
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At least 39 million years on record.

The record covers at least 41.03 Mya to 1.8 Mya. No occurrence read is dated outside 48.07 Mya to 774 ka.

Eocene — about 1 of 10 occurrencesEoceneOligocene — about 4 of 10 occurrencesOligoceneMiocene — about 3 of 10 occurrencesMiocenePliocene — about 1 of 10 occurrencesPleistocene — about 1 of 10 occurrences49–47 Mya — about 0.1 occurrences47–46 Mya — about 0.2 occurrences46–44 Mya — about 0.2 occurrences44–42 Mya — about 0.2 occurrences42–41 Mya — about 0.2 occurrences34–33 Mya — about 0.2 occurrences33–31 Mya — about 0.2 occurrences31–29 Mya — about 0.2 occurrences29–28 Mya — about 0.2 occurrences28–26 Mya — about 0.9 occurrences26–25 Mya — about 1 occurrence25–23 Mya — about 1 occurrence23–21 Mya — about 0.2 occurrences21–20 Mya — about 0.4 occurrences20–18 Mya — about 0.6 occurrences18–16 Mya — about 0.6 occurrences16–15 Mya — about 0.1 occurrences15–13 Mya — about 0.7 occurrences13–11 Mya — about 0.3 occurrences6.5–4.9 Mya — about 0.2 occurrences4.9–3.3 Mya — about 0.6 occurrences3.3–1.6 Mya — about 0.4 occurrences1.6–0 Mya — about 0.8 occurrences41.03 Mya1.8 Mya49 Mya0 Mya

10 occurrences of Asthenognathus on record, most of them in the Oligocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

10 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

Pysht — 48.16°N, 123.96°WPysht — 48.17°N, 123.94°WEstancia 25 de Mayo — 50.51°S, 72.25°WRio Foyel — 41.73°S, 71.46°WCentinela — 50.51°S, 72.25°W

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The named rock units Asthenognathus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Asthenognathus and its relatives

Oligocene

Where Asthenognathus and its relatives were recorded in the Oligocene.

Found in the same rock

154 taxa

The Paleobiology Database records 10 sites for Asthenognathus, 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

8 references

Each of the 10 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 Asthenognathus 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 Asthenognathus, or no answer at all. This entry cannot say which.

No 3D scan of Asthenognathus 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 itAsthenognathinae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Stimpson 1858