Exaeretodon

Exaeretodon is an extinct genus of fairly large, low-slung traversodontid cynodonts from the southern parts of Pangea. Four species are known, hailing from various formations. E. argentinus is from the Carnian-age Cancha de Bochas Member of the Ischigualasto Formation in the Ischigualasto-Villa Unión Basin in northwestern Argentina. E. major and E. riograndensis are from the Carnian-age portion of the Santa Maria Formation of the Paraná Basin in southeastern Brazil. E. statisticae is from the Carnian-age Lower Maleri Formation of India.

Exaeretodon

CT Snow from Hsinchu, Taiwan · 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
TraversodontidaePBDB
Diet
herbivorePBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At least 7.8 million years on record.

The record covers at least 241.464 Mya to 233.6 Mya. No occurrence read is dated outside 247 Mya to 205.7 Mya.

Early Triassic — about 0 of 12 occurrencesMiddle Triassic — about 3 of 12 occurrencesMiddle TriassicLate Triassic — about 9 of 12 occurrencesLate Triassic248–246 Mya — about 0.1 occurrences246–245 Mya — about 0.3 occurrences245–244 Mya — about 0.3 occurrences244–242 Mya — about 0.3 occurrences242–241 Mya — about 0.5 occurrences241–239 Mya — about 0.6 occurrences239–238 Mya — about 0.6 occurrences238–236 Mya — about 0.6 occurrences236–235 Mya — about 0.6 occurrences235–234 Mya — about 0.7 occurrences234–232 Mya — about 1 occurrence232–231 Mya — about 1 occurrence231–229 Mya — about 1 occurrence229–228 Mya — about 1 occurrence228–226 Mya — about 0.5 occurrences226–225 Mya — about 0.2 occurrences225–223 Mya — about 0.2 occurrences223–222 Mya — about 0.2 occurrences222–221 Mya — about 0.2 occurrences221–219 Mya — about 0.2 occurrences219–218 Mya — about 0.2 occurrences218–216 Mya — about 0.2 occurrences216–215 Mya — about 0.2 occurrences215–213 Mya — about 0.2 occurrences213–212 Mya — about 0.2 occurrences212–211 Mya — about 0.2 occurrences211–209 Mya — about 0.2 occurrences209–208 Mya — about 0.2 occurrences208–206 Mya — about 0.2 occurrences206–205 Mya — about 0.1 occurrences241.464 Mya233.6 Mya247.8 Mya204.9 Mya

12 occurrences of Exaeretodon on record, most of them in the Late Triassic. 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

12 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

Santa Maria — 29.67°S, 54.37°WSanta Maria — 29.65°S, 53.29°WSanta Maria — 29.70°S, 52.86°WSanta Maria — 29.66°S, 52.81°WIschigualasto — 31.10°S, 68.90°WIschigualasto — 29.22°S, 68.70°WIschigualasto — 29.37°S, 68.23°WMaleri — 19.17°N, 79.67°EWolfville — 45.40°N, 63.96°WSanto Domingo — 28.50°S, 68.75°W

Loading coastlines…

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

Exaeretodon and its relatives

Late Triassic

Where Exaeretodon and its relatives were recorded in the Late Triassic.

Found in the same rock

47 taxa

The Paleobiology Database records 11 sites for Exaeretodon, 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

11 references

Each of the 12 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 Exaeretodon

Credit
CT Snow from Hsinchu, Taiwan
Licence
CC BY 2.0
Commercial use
the licence allows it

Photogrammetry

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Exaeretodon argentinus · pvl:2554

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 itTraversodontidae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cabrera 1943