Hadrosaurus

Hadrosaurus is a genus of hadrosaurid ornithopod dinosaurs that lived in North America during the Late Cretaceous Period in what is now the Woodbury Formation in New Jersey about 83.6 to 77.9 million years ago. The holotype specimen was found in fluvial marine sedimentation, meaning that the corpse of the animal was transported by a river and washed out to sea. Some fossils are found in the Tar Heel/Coachman Formation.

Hadrosaurus

Jim, the Photographer from Springfield PA, United States of America · CC BY 2.0 · 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
BrachylophosauriniPBDB
Diet
herbivorePBDB, for Ornithopoda
Life habit
ground dwelling, gregariousPBDB, for Ornithischia
Motility
actively mobilePBDB, for Ornithischia
Environment
terrestrialPBDB, for Ornithischia
Length
9 mWikidata

Time the record covers

At most 20 million years on record.

Every occurrence read is dated to somewhere between 85.7 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 9 of 9 occurrencesLate CretaceousPaleocene — about 0 of 9 occurrences86–86 Mya — about 0.0 occurrences86–85 Mya — about 0.1 occurrences85–84 Mya — about 0.1 occurrences84–83 Mya — about 0.1 occurrences83–83 Mya — about 0.4 occurrences83–82 Mya — about 0.4 occurrences82–81 Mya — about 0.4 occurrences81–81 Mya — about 0.4 occurrences81–80 Mya — about 0.4 occurrences80–79 Mya — about 0.4 occurrences79–79 Mya — about 0.4 occurrences79–78 Mya — about 0.4 occurrences78–77 Mya — about 0.4 occurrences77–77 Mya — about 0.4 occurrences77–76 Mya — about 0.4 occurrences76–75 Mya — about 0.4 occurrences75–74 Mya — about 0.4 occurrences74–74 Mya — about 0.4 occurrences74–73 Mya — about 0.4 occurrences73–72 Mya — about 0.4 occurrences72–72 Mya — about 0.3 occurrences72–71 Mya — about 0.3 occurrences71–70 Mya — about 0.3 occurrences70–70 Mya — about 0.3 occurrences70–69 Mya — about 0.3 occurrences69–68 Mya — about 0.3 occurrences68–68 Mya — about 0.3 occurrences68–67 Mya — about 0.3 occurrences67–66 Mya — about 0.3 occurrences66–66 Mya — about 0.1 occurrences86.2 Mya65.5 Mya

9 occurrences of Hadrosaurus 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

9 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

7 formations

Marshalltown — 40.30°N, 74.30°WWoodbury — 39.91°N, 75.03°WNavesink — 40.31°N, 74.22°WFrenchman — 49.00°N, 110.55°WZhuravlevskaya — 52.46°N, 64.63°EOldman — 49.29°N, 112.21°WEutaw — 33.48°N, 88.42°W

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The named rock units Hadrosaurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Hadrosaurus and its relatives

Late Cretaceous

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

Found in the same rock

172 taxa

The Paleobiology Database records 9 sites for Hadrosaurus, 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

9 references

Each of the 9 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. 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 content3

Picture of Hadrosaurus

Credit
Jim, the Photographer from Springfield PA, United States of America
Licence
CC BY 2.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Hadrosaurus sp · pss-mae:MAE:19-46

3D model

Source
Sketchfab
Credit
PeePmono
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itBrachylophosaurini through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Leidy 1858