Ennatosaurus tecton

Ennatosaurus is an extinct genus of caseid synapsid that lived during the Middle Permian in northern European Russia. The genus is only represented by its type species, Ennatosaurus tecton, which was named in 1956 by Ivan Antonovich Efremov. The species is known from at least six skulls associated with their lower jaws, as well as from the postcranial bones of several juvenile individuals. Ennatosaurus has the typical caseid skull with a short snout tilted forward and very large external nares. However, it differs from other derived caseids by its postcranial skeleton with smaller proportions compared to the size of the skull. As with other advanced caseids, the teeth of Ennatosaurus were well suited for slicing and cutting vegetation. The presence of a highly developed hyoid apparatus indicates the presence of a massive and mobile tongue, which had to work in collaboration with the palatal teeth during swallowing. With a late Roadian - early Wordian age, Ennatosaurus is one of the last known caseids.

Ennatosaurus tecton

Nobu Tamura ( http://spinops.blogspot.com ) · CC BY 3.0 · 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
EnnatosaurusPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At most 15 million years on record.

Every occurrence read is dated to somewhere between 274.4 Mya and 259.857 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Permian — about 3 of 3 occurrencesPermian275–274 Mya — about 0.0 occurrences274–274 Mya — about 0.1 occurrences274–273 Mya — about 0.1 occurrences273–273 Mya — about 0.1 occurrences273–272 Mya — about 0.1 occurrences272–272 Mya — about 0.1 occurrences272–271 Mya — about 0.1 occurrences271–271 Mya — about 0.1 occurrences271–270 Mya — about 0.1 occurrences270–270 Mya — about 0.1 occurrences270–269 Mya — about 0.1 occurrences269–269 Mya — about 0.1 occurrences269–268 Mya — about 0.1 occurrences268–268 Mya — about 0.1 occurrences268–267 Mya — about 0.1 occurrences267–267 Mya — about 0.1 occurrences267–266 Mya — about 0.2 occurrences266–266 Mya — about 0.2 occurrences266–265 Mya — about 0.2 occurrences265–265 Mya — about 0.2 occurrences265–264 Mya — about 0.1 occurrences264–264 Mya — about 0.1 occurrences264–263 Mya — about 0.1 occurrences263–262 Mya — about 0.1 occurrences262–262 Mya — about 0.1 occurrences262–261 Mya — about 0.1 occurrences261–261 Mya — about 0.1 occurrences261–260 Mya — about 0.1 occurrences260–260 Mya — about 0.1 occurrences260–259 Mya — about 0.0 occurrences274.9 Mya259.4 Mya

3 occurrences of Ennatosaurus tecton on record, most of them in the Permian. 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

3 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

2 formations

Krasnoshchel' — 64.92°N, 45.67°EUnidad Roja Superior — 42.29°N, 1.49°E

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The named rock units Ennatosaurus tecton has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Ennatosaurus tecton and its relatives

Permian

Where Ennatosaurus tecton and its relatives were recorded in the Permian.

Found in the same rock

No other named taxon is catalogued from that site.

The Paleobiology Database records 1 site for Ennatosaurus tecton, and this reads all of them.

Entered from

3 references

Each of the 3 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Ennatosaurus tecton

Credit
Nobu Tamura ( http://spinops.blogspot.com )
Licence
CC BY 3.0
Commercial use
the licence allows it

No 3D scan of Ennatosaurus tecton 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 itEnnatosaurus through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Efremov 1956