Therizinosauria

Therizinosaurs are an extinct group of large herbivorous theropod dinosaurs whose fossils have been mainly discovered from Cretaceous deposits in Asia and North America. Potential fragmentary remains have also been found in Jurassic deposits of Asia and Europe. Various features of the forelimbs, skull and pelvis unite these finds as both theropods and maniraptorans, making them relatives of birds. The name of the representative genus, Therizinosaurus, is derived from the Greek θερίζω and σαῦρος. The older representative, Segnosaurus, is derived from the Latin sēgnis ('slow') and the Greek σαῦρος.

Therizinosauria

User:SSR2000 Kabacchi User:Daderot Paul Fisk Hanyong Pu, Yoshitsugu Kobayashi, Junchang Lü, Li Xu,Yanhua Wu, Huali Ch… · 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
ManiraptoriformesPBDB
Diet
carnivorePBDB, for Coelurosauria
Life habit
ground dwelling, solitaryPBDB, for Theropoda
Motility
actively mobilePBDB, for Theropoda
Environment
terrestrialPBDB, for Theropoda

Time the record covers

At least 127 million years on record.

The record covers at least 199.5 Mya to 72.2 Mya. No occurrence read is dated outside 201.4 Mya to 66 Mya.

Late Triassic — about 0 of 81 occurrencesEarly Jurassic — about 1 of 81 occurrencesEarly JurassicMiddle Jurassic — about 0 of 81 occurrencesLate Jurassic — about 0 of 81 occurrencesEarly Cretaceous — about 20 of 81 occurrencesEarly CretaceousLate Cretaceous — about 60 of 81 occurrencesLate CretaceousPaleocene — about 0 of 81 occurrences204–199 Mya — about 1 occurrence148–143 Mya — about 0.0 occurrences143–138 Mya — about 0.6 occurrences138–134 Mya — about 4 occurrences134–129 Mya — about 1 occurrence129–124 Mya — about 0.8 occurrences124–120 Mya — about 4 occurrences120–115 Mya — about 3 occurrences115–110 Mya — about 4 occurrences110–106 Mya — about 0.5 occurrences106–101 Mya — about 1 occurrence101–96 Mya — about 5 occurrences96–91 Mya — about 10 occurrences91–87 Mya — about 12 occurrences87–82 Mya — about 8 occurrences82–77 Mya — about 6 occurrences77–73 Mya — about 6 occurrences73–68 Mya — about 9 occurrences68–63 Mya — about 4 occurrences199.5 Mya72.2 Mya204 Mya63 Mya

81 occurrences of Therizinosauria 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

81 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

34 formations

Baynshire — 43.50°N, 107.76°EBaynshire — 43.14°N, 107.52°EBaynshire — 44.35°N, 109.35°EBaynshire — 44.45°N, 107.38°EBaynshire — 43.46°N, 107.49°EBaynshire — 43.45°N, 107.40°ENemegt — 43.49°N, 101.28°ENemegt — 43.87°N, 100.01°ENemegt — 43.76°N, 99.90°ENemegt — 43.58°N, 107.69°ENemegt — 43.48°N, 100.36°ENemegt — 44.07°N, 102.67°ENemegt — 43.47°N, 99.83°ENemegt — 43.32°N, 99.83°ENemegt — 43.60°N, 100.46°EBostobe — 45.95°N, 64.65°EBostobe — 46.57°N, 64.38°EBostobe — 46.57°N, 63.87°EBissekty — 42.12°N, 62.66°ECedar Mountain — 38.91°N, 110.10°WCedar Mountain — 38.73°N, 109.59°WZhirkindek — 46.22°N, 64.15°EBaruungoyot — 43.32°N, 99.83°EBaruungoyot — 43.47°N, 99.83°EIren Dabasu — 43.73°N, 112.02°EIren Dabasu — 43.84°N, 113.72°EYixian — 40.81°N, 119.80°EYixian — 37.43°N, 122.06°EYixian — 41.60°N, 120.87°EJobu — 32.74°N, 130.84°EJobu — 32.75°N, 130.85°EGaogou — 32.81°N, 110.72°EZhonggou — 41.73°N, 97.65°EZhonggou — 39.93°N, 98.50°EKhodzhakul — 40.10°N, 65.80°EIlek — 55.97°N, 88.09°EIlek — 55.90°N, 87.96°EBayangobi — 41.17°N, 106.08°ELufeng — 24.17°N, 102.40°EMoreno Hill — 35.07°N, 108.85°WSundays River — 33.42°S, 25.44°EMurtoi — 51.20°N, 106.27°EYuanpu — 23.48°N, 114.86°EYalovach — 40.49°N, 69.70°ETropic Shale — 37.08°N, 111.66°WXiagou — 39.93°N, 98.50°ENanchao — 32.52°N, 112.35°E

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The named rock units Therizinosauria has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 further formations hold fewer occurrences each and are not listed.

Therizinosauria and its relatives

Late Cretaceous

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

Found in the same rock

393 taxa

The Paleobiology Database records 77 sites for Therizinosauria, 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

55 references

Each of the 81 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. 43 further references are 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 content1

Picture of Therizinosauria

Credit
User:SSR2000 Kabacchi User:Daderot Paul Fisk Hanyong Pu, Yoshitsugu Kobayashi, Junchang Lü, Li Xu,Yanhua Wu, Huali Ch…
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan of Therizinosauria 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 itManiraptoriformes through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Russell 1997