Sinoceras
Sinoceras is an extinct genus of nautiloids from China included in the family Orthoceratidae that lived from the middle Ordovician until the Devonian. The type species, S. chinense, was originally described as "Orthoceras chinense," but then was promoted by Shimizu and Obata to its own genus, Sinoceras, in 1935.

Sinoceras.jpg : Christopher, Tania and Isabelle Luna derivative work: Kev min § · 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
- MichelinoceratinaePBDB
- Diet
- carnivorePBDB, for Orthocerida
- Life habit
- nektonicPBDB, for Orthocerida
- Motility
- actively mobilePBDB, for Orthocerida
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Orthocerida
Time the record covers
At least 3.2 million years on record.
The record covers at least 458.2 Mya to 455 Mya. No occurrence read is dated outside 468 Mya to 449.5 Mya.
44 occurrences of Sinoceras on record, most of them in the Ordovician. 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
44 occurrences- Ordovician100%
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
14 formations
- Baota Formation25
- Guniutan Formation3
- Yanwashan Formation3
- Chedao Formation3
- Dachao Formation1
- Shizipu Formation1
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The named rock units Sinoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Sinoceras and its relatives
OrdovicianWhere Sinoceras and its relatives were recorded in the Ordovician.
Found in the same rock
166 taxa- Michelinoceras30 sites
- Illaenus15 sites
- Ovalocephalus14 sites
- Nileus12 sites
- Orthoceras12 sites
- Cyclopyge11 sites
- Discoceras11 sites
- Richardsonoceras10 sites
- Remopleurides9 sites
- Dideroceras8 sites
- Vaginoceras8 sites
- Eosomichelinoceras7 sites
- Geragnostus7 sites
- Telephina7 sites
- Ecculiomphalus6 sites
- Paraphillipsinella6 sites
- Birmanites5 sites
- Trilacinoceras5 sites
- Lituites4 sites
- Lonchodomas4 sites
- Trinodus4 sites
- Ceraurinus3 sites
- Ctenoceras3 sites
- Dionide3 sites
The Paleobiology Database records 44 sites for Sinoceras, 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
16 references- Stratigraphic Summary of the Southwestern Region of China8
- Ordovician system of the Lower Yangtze region in Jiangsu Province4
- Regional stratigraphic table of the southwestern region of China, Sichuan part4
- Regional stratigraphic data of central South China4
- Summary of regional geology of Hu''nan Province, China3
- Regional stratigraphic table of Northwest China, Shanxi Province Part3
- Stratigraphic table of northwestern region of China: XinJiang Province part3
- Regional stratigraphic table of Eastern China, AnHui Province3
- Regional stratigraphic table of northern China: NingXia, GanSu and ShanDong Provinces2
- Regional stratigraphic tables of the north western China region: Volume of NinXia Province2
- Regional stratigraphic table of Eastern China, Zhejiang Province2
- Regional stratigraphic table of the southwestern region of China, Guizhou part2
Each of the 44 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. 4 further references are not listed. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Sinoceras
- Source
- Wikipedia/Commons
- Credit
- Sinoceras.jpg : Christopher, Tania and Isabelle Luna derivative work: Kev min §
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
No 3D scan of Sinoceras 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
- Source
- Wikipedia, “Sinoceras”
- 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 itMichelinoceratinae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Shimizu et al. 1935