Anisotremus

Anisotremus is a genus of grunts native to the eastern Pacific and western Atlantic Oceans. The name of this genus is compound of anisto meaning “different” and tremus meaning “hole”, referring to the differently sized, paired pores on each side of the head.

Anisotremus

Brian Gratwicke · CC BY 2.0 · 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
HaemulidaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 48 million years on record.

The record covers at least 48.07 Mya to 11.7 ka. No occurrence read is dated outside 56 Mya to 0 Mya.

Paleocene — about 0 of 10 occurrencesEocene — about 5 of 10 occurrencesEoceneOligocene — about 0 of 10 occurrencesMiocene — about 1 of 10 occurrencesMiocenePliocene — about 1 of 10 occurrencesPleistocene — about 1 of 10 occurrences57–55 Mya — about 0.1 occurrences55–53 Mya — about 0.2 occurrences53–51 Mya — about 0.2 occurrences51–50 Mya — about 0.2 occurrences50–48 Mya — about 0.3 occurrences48–46 Mya — about 0.5 occurrences46–44 Mya — about 0.5 occurrences44–42 Mya — about 0.5 occurrences42–40 Mya — about 0.6 occurrences40–38 Mya — about 0.6 occurrences38–36 Mya — about 0.5 occurrences36–34 Mya — about 0.5 occurrences34–32 Mya — about 0.1 occurrences13–11 Mya — about 0.0 occurrences11–9.5 Mya — about 0.4 occurrences9.5–7.6 Mya — about 0.4 occurrences7.6–5.7 Mya — about 0.1 occurrences5.7–3.8 Mya — about 0.9 occurrences3.8–1.9 Mya — about 0.1 occurrences1.9–0 Mya — about 3 occurrences48.07 Mya11.7 ka57 Mya0 Mya

10 occurrences of Anisotremus on record, most of them in the Eocene. The Paleobiology Database records this as a living group. 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

5 formations

Yorktown — 35.36°N, 76.82°WPalos Verdes Sand — 33.99°N, 118.45°WBahía Inglesa — 27.04°S, 70.81°WCook Mountain — 30.61°N, 96.57°WReklaw — 30.00°N, 97.25°W

Loading coastlines…

The named rock units Anisotremus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Anisotremus and its relatives

Eocene

Where Anisotremus and its relatives were recorded in the Eocene.

Found in the same rock

950 taxa

The Paleobiology Database records 8 sites for Anisotremus, 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 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 content2

Picture of Anisotremus

Credit
Brian Gratwicke
Licence
CC BY 2.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Anisotremus virginicus · tcwc:ichthyology:3122.19

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 itHaemulidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gill 1861