Sinornithosaurus millenii

FunkMonk · CC BY-SA 3.0 · 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
- SinornithosaurusPBDB
- Diet
- carnivorePBDB, for Dromaeosauridae
- Life habit
- ground dwellingPBDB, for Dromaeosauridae
- Motility
- actively mobilePBDB, for Theropoda
- Environment
- terrestrialPBDB, for Dromaeosauridae
Time the record covers
At most 6.2 million years on record.
Every occurrence read is dated to somewhere between 125.77 Mya and 119.57 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Sinornithosaurus millenii 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
- Yixian Formation · Jehol Group2
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The named rock units Sinornithosaurus millenii has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Sinornithosaurus millenii and its relatives
Early CretaceousWhere Sinornithosaurus millenii and its relatives were recorded in the Early Cretaceous.
Found in the same rock
25 taxa- Beipiaosaurus inexpectus1 site
- Confuciusornis1 site
- Dalinghosaurus longidigitus1 site
- Enantiornithes1 site
- Gegepterus changi1 site
- Grallator cursorius1 site
- Hyphalosaurus baitaigouensis1 site
- Istiodactylus sinensis1 site
- Jeholodens jenkinsi1 site
- Jianianhualong tengi1 site
- Jinanichthys1 site
- Jinzhousaurus yangi1 site
- Jixiangornis orientalis1 site
- Liaobatrachus beipiaoensis1 site
- Liaobatrachus grabaui1 site
- Longdeichthys1 site
- Monjurosuchus splendens1 site
- Ordosemys liaoxiensis1 site
- Psittacosaurus1 site
- Pterodactyloidea1 site
- Sapeornis chaoyangensis1 site
- Shenzhouraptor sinensis1 site
- Shenzhousaurus orientalis1 site
- Sinamia1 site
The Paleobiology Database records 2 sites for Sinornithosaurus millenii, 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
2 references- A new species of dromaeosaurids from the Yixian Formation of western Liaoning1
- A dromaeosaurid dinosaur with a filamentous integument from the Yixian Formation of China1
Each 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. 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 Sinornithosaurus millenii
- Source
- Wikidata/Commons
- Credit
- FunkMonk
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Sinornithosaurus millenii was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itSinornithosaurus through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Xu et al. 1999