Grypoceras

Yale Peabody Museum · CC0 · via GBIF. 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
- GrypoceratidaePBDB
- Diet
- carnivorePBDB, for Nautilida
- Life habit
- nektobenthicPBDB, for Nautilida
- Motility
- actively mobilePBDB, for Nautilida
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At least 48 million years on record.
The record covers at least 254.14 Mya to 205.7 Mya. No occurrence read is dated outside 259.857 Mya to 201.4 Mya.
41 occurrences of Grypoceras on record, most of them in the Middle Triassic. 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
41 occurrencesThese 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
13 formations
- Halstatt Formation7
- Prida Formation · Star Peak Group4
- Mianwali Formation2
- Cehegin Formation2
- Zhitkov Formation1
- Candelaria Formation1
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The named rock units Grypoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.
Grypoceras and its relatives
Middle TriassicWhere Grypoceras and its relatives were recorded in the Middle Triassic.
Found in the same rock
427 taxa- Trematoceras elegans7 sites
- Orthoceratoidea5 sites
- Paraceratites trinodosus4 sites
- Rhacophyllites debilis4 sites
- Acrochordiceras carolinae3 sites
- Acrochordiceras hyatti3 sites
- Gymnites perplanus3 sites
- Indonautilus privatus3 sites
- Monophyllites wengensis3 sites
- Ophiceras tibeticum3 sites
- Otoceras woodwardi3 sites
- Paranautilus simonyi3 sites
- Proclydonautilus gasteroptychus3 sites
- Sageceras walteri3 sites
- Acrochordiceras hatschekii2 sites
- Adygella himalayana2 sites
- Alanites mulleri2 sites
- Arcestes gigantogaleatus2 sites
- Arcestes hypocyrtus2 sites
- Arcestes intuslabiatus2 sites
- Atractites2 sites
- Atractites alveolaris2 sites
- Ceratites beyrichi2 sites
- Cladiscites tornatus2 sites
The Paleobiology Database records 36 sites for Grypoceras, 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
23 references- Das Gebirge um Hallstatt. Eine geologisch-paläontologische Studie aus den Alpen. 1 Teil, Die Mollusken-Faunen der Zlambach- und Hallstätter-Schichten7
- Middle Triassic Molluscan Fossils of Biostratigraphic Significance from the Humboldt Range, Northwestern Nevada4
- Die Cephalopoden der Mediterranen Triasprovinz4
- Nautiloids from the Muschelkalk facies of the Southiberian Triassic (Betic Cordillera, southern Spain)2
- [Sections of the Trias from the upper River Kolym and northern Priochotya]2
- Lower Triassic Salt Range nautiloids2
- The Middle Triassic marine invertebrate faunas of North America2
- The Fauna of the Himalayan Muschelkalk2
- The Cephalopoda of the Lower Trias2
- New records of Norian coiled nautiloids from the Timon Klippe (Rarău Syncline, Eastern Carpathians, Romania)1
- Triassic Ammonoid succession in South Primorye: 3. Late Olenekian - Early Anisian Zones (Neocolumbites insignis, Subcolumbites multiformis, Ussuriphyllites amurensis and Leiophyllites pradyumna)1
- Description of the first Rhaetian nautiloid (Grypoceras rhaeticum n. sp.) from the Kossen Beds of the Fonsjoch near Achensee (Austria)1
Each of the 41 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. 11 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 Grypoceras
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Grypoceras 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itGrypoceratidae through timeFormations of the Middle TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Hyatt 1883)