Hylaeosaurus

Hylaeosaurus is a herbivorous ankylosaurian dinosaur that lived about 136 million years ago, in the late Valanginian stage of the early Cretaceous period of England. It was found in the Grinstead Clay.

Hylaeosaurus

Sven Sachs, Jahn J. Hornung · CC BY 2.5 · 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
NodosauridaePBDB
Diet
herbivorePBDB, for Ornithischia
Life habit
ground dwelling, gregariousPBDB, for Ornithischia
Motility
actively mobilePBDB, for Ornithischia
Environment
terrestrialPBDB, for Ornithischia
Length
5 mWikidata

Time the record covers

At least 23 million years on record.

The record covers at least 137.05 Mya to 113.2 Mya. No occurrence read is dated outside 139.1 Mya to 110.1 Mya.

Early Cretaceous — about 10 of 10 occurrencesEarly Cretaceous140–139 Mya — about 0.5 occurrences139–138 Mya — about 1 occurrence138–137 Mya — about 1 occurrence137–136 Mya — about 1 occurrence136–135 Mya — about 1 occurrence135–134 Mya — about 1 occurrence134–133 Mya — about 1 occurrence133–132 Mya — about 0.1 occurrences132–131 Mya — about 0.1 occurrences131–130 Mya — about 0.1 occurrences130–129 Mya — about 0.1 occurrences129–128 Mya — about 0.1 occurrences128–127 Mya — about 0.1 occurrences127–126 Mya — about 0.1 occurrences126–125 Mya — about 0.3 occurrences125–124 Mya — about 0.3 occurrences124–123 Mya — about 0.3 occurrences123–122 Mya — about 0.3 occurrences122–121 Mya — about 0.1 occurrences121–120 Mya — about 0.1 occurrences114–113 Mya — about 0.2 occurrences113–112 Mya — about 0.3 occurrences112–111 Mya — about 0.3 occurrences111–110 Mya — about 0.1 occurrences137.05 Mya113.2 Mya139.7 Mya109.5 Mya

10 occurrences of Hylaeosaurus 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

10 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

5 formations

Tunbridge Wells Sand — 51.09°N, 0.17°WTunbridge Wells Sand — 51.09°N, 0.30°WBückeberg — 52.26°N, 7.03°EWeald Clay — 50.98°N, 0.20°WAshdown — 50.67°N, 2.46°WWadhurst Clay — 50.86°N, 0.44°E

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The named rock units Hylaeosaurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Hylaeosaurus and its relatives

Early Cretaceous

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

Found in the same rock

90 taxa

The Paleobiology Database records 9 sites for Hylaeosaurus, 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

8 references

Each of the 10 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 content2

Picture of Hylaeosaurus

Credit
Sven Sachs, Jahn J. Hornung
Licence
CC BY 2.5
Commercial use
the licence allows it

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 itNodosauridae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Mantell 1833