Sasayamagnomus saegusai

Sasayamagnomus is an extinct genus of neoceratopsian dinosaur from the Early Cretaceous Ohyamashimo Formation of Hyōgo Prefecture, Japan. The genus contains a single species, Sasayamagnomus saegusai. The holotype individual is estimated to reach 80 centimetres (2.6 ft) long, although this specimen is not fully grown.

Sasayamagnomus saegusai

Palaeotaku · CC BY 4.0 · 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
SasayamagnomusPBDB
Diet
herbivorePBDB, for Ceratopsia
Life habit
ground dwellingPBDB, for Ceratopsia
Motility
actively mobilePBDB, for Ornithischia
Environment
terrestrialPBDB, for Ceratopsia

Time the record covers

At most 3.1 million years on record.

The one occurrence read is dated to somewhere between 113.2 Mya and 110.1 Mya, which is a dating window rather than a span.

Early Cretaceous — about 1 of 1 occurrenceEarly Cretaceous113–113 Mya — about 0.0 occurrences113–113 Mya — about 0.0 occurrences113–113 Mya — about 0.0 occurrences113–113 Mya — about 0.0 occurrences113–113 Mya — about 0.0 occurrences113–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–112 Mya — about 0.0 occurrences112–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–111 Mya — about 0.0 occurrences111–110 Mya — about 0.0 occurrences110–110 Mya — about 0.0 occurrences110–110 Mya — about 0.0 occurrences110–110 Mya — about 0.0 occurrences113.7 Mya109.6 Mya

1 occurrence of Sasayamagnomus saegusai 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

1 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

1 formation

Ohyamashimo — 35.09°N, 135.18°E

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

Sasayamagnomus saegusai and its relatives

Early Cretaceous

Where Sasayamagnomus saegusai and its relatives were recorded in the Early Cretaceous.

Found in the same rock

5 taxa

The Paleobiology Database records 1 site for Sasayamagnomus saegusai, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

1 reference

Each of the 1 occurrence 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 Sasayamagnomus saegusai

Credit
Palaeotaku
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Sasayamagnomus saegusai 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 itSasayamagnomus through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Tanaka et al. 2024