Chasmosaurus

Chasmosaurus

Sampson SD, Loewen MA, Farke AA, Roberts EM, Forster CA, et al. · 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
ChasmosaurinaePBDB
Diet
herbivorePBDB, for Ceratopsia
Life habit
ground dwellingPBDB, for Ceratopsia
Motility
actively mobilePBDB, for Ornithischia
Environment
terrestrialPBDB, for Ceratopsia
Length
5 mWikidata
Mass
2 tonneWikidata

Time the record covers

At most 12 million years on record.

Every occurrence read is dated to somewhere between 83.6 Mya and 72.2 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 21 of 21 occurrencesLate Cretaceous84–83 Mya — about 0.6 occurrences83–83 Mya — about 0.8 occurrences83–82 Mya — about 0.8 occurrences82–82 Mya — about 0.8 occurrences82–82 Mya — about 0.8 occurrences82–81 Mya — about 0.8 occurrences81–81 Mya — about 0.8 occurrences81–80 Mya — about 0.8 occurrences80–80 Mya — about 0.8 occurrences80–80 Mya — about 0.8 occurrences80–79 Mya — about 0.8 occurrences79–79 Mya — about 0.8 occurrences79–78 Mya — about 0.8 occurrences78–78 Mya — about 0.8 occurrences78–77 Mya — about 0.8 occurrences77–77 Mya — about 0.8 occurrences77–77 Mya — about 0.8 occurrences77–76 Mya — about 0.8 occurrences76–76 Mya — about 0.8 occurrences76–75 Mya — about 0.8 occurrences75–75 Mya — about 0.8 occurrences75–75 Mya — about 0.8 occurrences75–74 Mya — about 0.8 occurrences74–74 Mya — about 0.8 occurrences74–73 Mya — about 0.8 occurrences73–73 Mya — about 0.8 occurrences73–73 Mya — about 0.8 occurrences73–72 Mya — about 0.6 occurrences84.1 Mya71.7 Mya

21 occurrences of Chasmosaurus on record, most of them in the Late 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

21 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

Dinosaur Park — 50.73°N, 111.51°WDinosaur Park — 50.75°N, 111.48°WDinosaur Park — 50.78°N, 111.60°WDinosaur Park — 50.73°N, 111.57°WDinosaur Park — 49.14°N, 110.48°WDinosaur Park — 51.56°N, 108.14°WDinosaur Park — 50.40°N, 111.10°WOldman — 50.63°N, 111.62°WJudith River — 46.40°N, 109.66°W

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The named rock units Chasmosaurus 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.

Chasmosaurus and its relatives

Late Cretaceous

Where Chasmosaurus and its relatives were recorded in the Late Cretaceous.

Found in the same rock

52 taxa

The Paleobiology Database records 21 sites for Chasmosaurus, 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

13 references

Each of the 21 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. 1 further reference is 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 content2

Picture of Chasmosaurus

Credit
Sampson SD, Loewen MA, Farke AA, Roberts EM, Forster CA, et al.
Licence
CC BY 2.5
Commercial use
the licence allows it

3D model

Source
Sketchfab
Credit
kenchoo
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itChasmosaurinae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lambe 1914