Simpsonodon

Simpsonodon is an extinct genus of docodontan mammaliaform known from the Middle Jurassic of England, Kyrgyzstan and Russia. The type species S. oxfordensis was described from the Kirtlington Mammal Bed and Watton Cliff in the Forest Marble Formation of England. It was named after George Gaylord Simpson, a pioneering mammalologist and contributor to the Modern Evolutionary Synthesis. A second species S. sibiricus is known from the Itat Formation of Russia, and indeterminate species of the genus are also known from the Balabansai Formation in Kyrgyzstan

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

On record

Recorded, not inferred
Sits inside
SimpsonodontidaePBDB
Diet
insectivorePBDB, for Mammaliaformes
Life habit
scansorialPBDB, for Mammaliaformes
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At most 6.7 million years on record.

Every occurrence read is dated to somewhere between 168.2 Mya and 161.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Jurassic — about 5 of 5 occurrencesMiddle JurassicLate Jurassic — about 0 of 5 occurrences168–168 Mya — about 0.0 occurrences168–168 Mya — about 0.4 occurrences168–168 Mya — about 0.4 occurrences168–167 Mya — about 0.4 occurrences167–167 Mya — about 0.4 occurrences167–167 Mya — about 0.4 occurrences167–167 Mya — about 0.4 occurrences167–166 Mya — about 0.4 occurrences166–166 Mya — about 0.4 occurrences166–166 Mya — about 0.4 occurrences166–166 Mya — about 0.4 occurrences166–165 Mya — about 0.4 occurrences165–165 Mya — about 0.1 occurrences165–165 Mya — about 0.1 occurrences165–165 Mya — about 0.1 occurrences165–164 Mya — about 0.1 occurrences164–164 Mya — about 0.1 occurrences164–164 Mya — about 0.1 occurrences164–164 Mya — about 0.1 occurrences164–163 Mya — about 0.1 occurrences163–163 Mya — about 0.1 occurrences163–163 Mya — about 0.1 occurrences163–163 Mya — about 0.1 occurrences163–162 Mya — about 0.1 occurrences162–162 Mya — about 0.1 occurrences162–162 Mya — about 0.1 occurrences162–162 Mya — about 0.1 occurrences162–161 Mya — about 0.0 occurrences168.7 Mya161 Mya

5 occurrences of Simpsonodon on record, most of them in the Middle Jurassic. 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

5 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

Forest Marble — 50.71°N, 2.78°WForest Marble — 51.87°N, 1.27°WItat — 55.65°N, 89.18°EBalabansai — 41.34°N, 72.23°EWhite Limestone — 51.75°N, 1.17°W

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

Simpsonodon and its relatives

Middle Jurassic

Where Simpsonodon and its relatives were recorded in the Middle Jurassic.

Found in the same rock

148 taxa

The Paleobiology Database records 5 sites for Simpsonodon, 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

5 references

Each of the 5 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 Simpsonodon 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 Simpsonodon, or no answer at all. This entry cannot say which.

No 3D scan of Simpsonodon was found in MorphoSource and Sketchfab.

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 itSimpsonodontidae through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kermack et al. 1987