Tangvayosaurus hoffeti
Tangvayosaurus is a genus of sauropod dinosaur from the Lower Cretaceous Grès supérieurs Formation of Savannakhet Province, Laos. It was a basal somphospondylan, measuring about 15 m (49 ft) long, and is known from the remains of two or three individuals.

Chaoborus · CC BY-SA 3.0 · 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
- TangvayosaurusPBDB
- Diet
- herbivorePBDB, for Sauropoda
- Life habit
- ground dwelling, gregariousPBDB, for Sauropoda
- Motility
- actively mobilePBDB, for Sauropoda
- Environment
- terrestrialPBDB, for Sauropoda
Time the record covers
At most 21 million years on record.
Every occurrence read is dated to somewhere between 121.4 Mya and 100.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Tangvayosaurus hoffeti 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
2 occurrences- Early Cretaceous100%
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
- Grès supérieurs Formation · Indosinias Group2
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The named rock units Tangvayosaurus hoffeti has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Tangvayosaurus hoffeti and its relatives
Early CretaceousWhere Tangvayosaurus hoffeti and its relatives were recorded in the Early Cretaceous.
Found in the same rock
1 taxon- Carettochelyidae1 site
The Paleobiology Database records 2 sites for Tangvayosaurus hoffeti, 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 referenceEach of the 2 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. 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 Tangvayosaurus hoffeti
- Source
- Wikipedia/Commons
- Credit
- Chaoborus
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Tangvayosaurus hoffeti 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 itTangvayosaurus through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Allain et al. 1999