Tritylodontidae

Tritylodontidae is an extinct family of small to medium-sized, highly specialized mammal-like cynodonts, with several mammalian traits including erect limbs, endothermy, and some details of the skeleton. They were the last-known family of the non-mammaliaform synapsids, persisting into the Early Cretaceous.

Tritylodontidae

Nobu Tamura ( http://spinops.blogspot.com ) · CC BY 2.5 · via Wikidata/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
CynodontiaPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At least 84 million years on record.

The record covers at least 205.7 Mya to 121.4 Mya. No occurrence read is dated outside 227.3 Mya to 113.2 Mya.

Late Triassic — about 6 of 121 occurrencesLate TriassicEarly Jurassic — about 74 of 121 occurrencesEarly JurassicMiddle Jurassic — about 19 of 121 occurrencesMiddle JurassicLate Jurassic — about 9 of 121 occurrencesLate JurassicEarly Cretaceous — about 13 of 121 occurrencesEarly Cretaceous230–226 Mya — about 0.1 occurrences226–222 Mya — about 0.3 occurrences222–218 Mya — about 0.3 occurrences218–214 Mya — about 0.3 occurrences214–210 Mya — about 0.3 occurrences210–206 Mya — about 0.3 occurrences206–202 Mya — about 4 occurrences202–198 Mya — about 25 occurrences198–194 Mya — about 24 occurrences194–190 Mya — about 13 occurrences190–186 Mya — about 8 occurrences186–182 Mya — about 4 occurrences182–178 Mya — about 0.2 occurrences178–174 Mya — about 0.2 occurrences174–170 Mya — about 0.1 occurrences170–166 Mya — about 12 occurrences166–162 Mya — about 7 occurrences162–158 Mya — about 2 occurrences158–154 Mya — about 2 occurrences154–150 Mya — about 0.4 occurrences150–147 Mya — about 2 occurrences147–143 Mya — about 2 occurrences143–139 Mya — about 0.2 occurrences139–135 Mya — about 0.2 occurrences135–131 Mya — about 0.2 occurrences131–127 Mya — about 0.2 occurrences127–123 Mya — about 4 occurrences123–119 Mya — about 4 occurrences119–115 Mya — about 3 occurrences115–111 Mya — about 1 occurrence205.7 Mya121.4 Mya230 Mya111 Mya

121 occurrences of Tritylodontidae on record, most of them in the Early 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

121 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

27 formations

Kayenta — 36.82°N, 110.06°WKayenta — 35.76°N, 111.07°WKayenta — 36.35°N, 109.62°WKayenta — 35.73°N, 111.07°WKayenta — 35.88°N, 111.41°WKayenta — 36.07°N, 111.27°WKayenta — 35.90°N, 111.18°WKayenta — 35.68°N, 111.03°WKayenta — 37.00°N, 110.70°WElliot — 31.92°S, 21.52°EElliot — 28.98°S, 27.37°EElliot — 29.22°S, 27.34°EElliot — 29.23°S, 27.35°EElliot — 29.13°S, 27.33°EElliot — 29.08°S, 27.37°EElliot — 28.68°S, 28.32°EElliot — 28.55°S, 28.38°EElliot — 28.42°S, 28.50°EElliot — 28.53°S, 28.50°EElliot — 28.62°S, 28.27°EElliot — 29.03°S, 27.48°EElliot — 29.07°S, 27.50°EForest Marble — 51.87°N, 1.27°WForest Marble — 50.71°N, 2.78°WForest Marble — 50.68°N, 2.66°WForest Marble — 51.73°N, 1.98°WForest Marble — 51.51°N, 2.16°WLufeng — 25.17°N, 102.08°EIlek — 55.90°N, 87.96°EIlek — 56.53°N, 91.81°EIlek — 55.97°N, 88.09°EIlek — 56.57°N, 91.85°EIlek — 56.62°N, 91.99°EElliot — 29.85°S, 27.25°EElliot — 29.80°S, 27.42°EElliot — 30.35°S, 27.75°EElliot — 29.85°S, 27.36°EKuwajima — 36.17°N, 136.63°EShishugou — 45.15°N, 88.90°EShishugou — 44.81°N, 90.05°EShishugou — 45.17°N, 88.92°EExter — 48.56°N, 9.07°EExter — 48.67°N, 9.14°EUlan Malgait — 44.07°N, 95.81°EChipping Norton Limestone — 51.99°N, 1.80°WShaximiao — 29.41°N, 104.85°EWhite Limestone — 51.75°N, 1.17°WHanson — 84.33°S, 166.45°EItat — 55.65°N, 89.18°EChinle — 36.33°N, 106.47°WLa Boca — 26.60°N, 99.52°WHampen Marly — 51.80°N, 1.23°WClarens — 28.78°S, 27.23°ETaynton Limestone — 51.85°N, 1.43°WNavajo Sandstone — 36.68°N, 110.79°WBatylykh — 62.73°N, 117.61°EKilmaluag — 57.17°N, 6.11°WGardner Canyon — 32.23°N, 111.10°W

Loading coastlines…

The named rock units Tritylodontidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 further formations hold fewer occurrences each and are not listed. 6 occurrences have no formation on record, which is common for older literature.

Tritylodontidae and its relatives

Early Jurassic

Where Tritylodontidae and its relatives were recorded in the Early Jurassic.

Found in the same rock

513 taxa

The Paleobiology Database records 90 sites for Tritylodontidae, 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

58 references

Each of the 121 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. 46 further references are not listed. 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 content1

Picture of Tritylodontidae

Credit
Nobu Tamura ( http://spinops.blogspot.com )
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan of Tritylodontidae 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.

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 itCynodontia through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Cope 1884)