Incisivosaurus

Incisivosaurus is a genus of small, probably herbivorous theropod dinosaurs from the early Cretaceous Period of what is now the People's Republic of China. The first specimen to be described, IVPP V13326, is a skull that was collected from the lowermost levels of the Yixian Formation in the Sihetun area, near Beipiao City, in western Liaoning Province. The most significant, and highly unusual, characteristic of this dinosaur is its apparent adaptation to an herbivorous or omnivorous lifestyle. It was named for its prominent, rodent-like front teeth, which show wear patterns commonly found in plant-eating dinosaurs. The specific name gauthieri honors Dr. Jacques Gauthier, a pioneer of the phylogenetic method of classification.

Incisivosaurus

Jaime A. Headden ( User:Qilong ) · 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
OviraptorosauriaPBDB
Diet
omnivorePBDB, for Oviraptorosauria
Life habit
ground dwelling, depth=surfacePBDB, for Oviraptorosauria
Motility
actively mobilePBDB, for Oviraptorosauria
Environment
terrestrialPBDB, for Oviraptorosauria

Time the record covers

At most 26 million years on record.

Every occurrence read is dated to somewhere between 125.77 Mya and 100.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Cretaceous — about 4 of 4 occurrencesEarly CretaceousLate Cretaceous — about 0 of 4 occurrences126–125 Mya — about 0.1 occurrences125–125 Mya — about 0.1 occurrences125–124 Mya — about 0.1 occurrences124–123 Mya — about 0.1 occurrences123–122 Mya — about 0.1 occurrences122–121 Mya — about 0.2 occurrences121–120 Mya — about 0.3 occurrences120–119 Mya — about 0.2 occurrences119–118 Mya — about 0.1 occurrences118–118 Mya — about 0.1 occurrences118–117 Mya — about 0.1 occurrences117–116 Mya — about 0.1 occurrences116–115 Mya — about 0.1 occurrences115–114 Mya — about 0.1 occurrences114–113 Mya — about 0.1 occurrences113–112 Mya — about 0.1 occurrences112–111 Mya — about 0.1 occurrences111–111 Mya — about 0.1 occurrences111–110 Mya — about 0.1 occurrences110–109 Mya — about 0.1 occurrences109–108 Mya — about 0.1 occurrences108–107 Mya — about 0.1 occurrences107–106 Mya — about 0.1 occurrences106–105 Mya — about 0.1 occurrences105–104 Mya — about 0.1 occurrences104–103 Mya — about 0.1 occurrences103–103 Mya — about 0.1 occurrences103–102 Mya — about 0.1 occurrences102–101 Mya — about 0.1 occurrences101–100 Mya — about 0.1 occurrences126.3 Mya100 Mya

4 occurrences of Incisivosaurus on record, most of them in the Early Cretaceous. 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

4 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

3 formations

Fuxin — 42.00°N, 121.69°EYixian — 41.60°N, 120.91°EShahai — 41.81°N, 121.99°E

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

Incisivosaurus and its relatives

Early Cretaceous

Where Incisivosaurus and its relatives were recorded in the Early Cretaceous.

Found in the same rock

35 taxa

The Paleobiology Database records 4 sites for Incisivosaurus, 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

2 references

Each of the 4 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 content2

Picture of Incisivosaurus

Credit
Jaime A. Headden ( User:Qilong )
Licence
CC BY 3.0
Commercial use
the licence allows it

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Incisivosaurus gauthieri · ivpp:v:13326

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 itOviraptorosauria through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Xu et al. 2002