Apatokephalus
via iDigBio · via iDigBio. 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
- RemopleurididaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- nektobenthicPBDB, for Remopleurididae
- Motility
- actively mobilePBDB, for Remopleurididae
- Vision
- well-developedPBDB, for Remopleurididae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 20 million years on record.
The record covers at least 488.9 Mya to 468 Mya. No occurrence read is dated outside 497 Mya to 457.3 Mya.
120 occurrences of Apatokephalus 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
120 occurrences- Cambrian4%
- Ordovician96%
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
42 formations
- Santa Rosita Formation · Santa Victoria Group23
- Kamlak Formation · Takoshkin Group6
- Deadwood Formation5
- Upper Fezouata Formation5
- Goodwin Formation5
- Nya Formation5
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The named rock units Apatokephalus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 18 further formations hold fewer occurrences each and are not listed. 21 occurrences have no formation on record, which is common for older literature.
Apatokephalus and its relatives
OrdovicianWhere Apatokephalus and its relatives were recorded in the Ordovician.
Found in the same rock
572 taxa- Geragnostus25 sites
- Euloma20 sites
- Shumardia15 sites
- Asaphellus14 sites
- Niobe (Niobella)14 sites
- Notopeltis orthometopa13 sites
- Asaphellus catamarcensis12 sites
- Symphysurus12 sites
- Mekynophrys nanna11 sites
- Nanorthis11 sites
- Parabolinella10 sites
- Platypeltoides10 sites
- Pyrimetopus pyrifrons10 sites
- Didymograptus9 sites
- Leptoplastides marianus9 sites
- Harpides8 sites
- Niobe8 sites
- Orometopus8 sites
- Parabolinella triarthroides8 sites
- Ampyx7 sites
- Ceratopyge7 sites
- Conophrys minutula7 sites
- Hystricurus7 sites
- Parabathycheilus gallicus7 sites
The Paleobiology Database records 112 sites for Apatokephalus, 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
51 references- Ordovician trilobites of Argentina23
- Early Ordovician trilobites from the Iruya area (Cordillera Oriental, northwestern Argentina) and their stratigraphic significance6
- Early Ordovician trilobites from the Nazareno area, northwestern Argentina6
- Biostratigrafiya i trilobity verkhnego Kembriya i nizhnego Ordovika severo-zapada Sibirskoy Platformy [Biostratigraphy and trilobites of the Upper Cambrian and Lower Ordovician of the northwestern Siberian platform]6
- Trilobites from the Survey Peak, Outram and Skoki Formations (Upper Cambrian-Lower Ordovician) at Wilcox Pass, Jasper National Park, Alberta)5
- The lower Ordovician stratigraphy and trilobites of the Landreyan valley and the neighbouring district of the Montagne Noire, southwestern France5
- On the Early Ordovician of Sweden stratigraphy and fauna5
- Ordovician Sedimentary Basin and Paleobiotas of the Gorny Altai4
- Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada4
- The new Ordovician stage standard as applied to the stratigraphic units of the western Altai–Sayan Folded Area3
- Unusual trilobite biofacies from the Lower Ordovician of the Argentine Cordillera Oriental: new insights into olenid palaeoecology3
- Rare Tremadocian trilobites from Norway3
Each of the 120 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. 39 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 Apatokephalus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itRemopleurididae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Brögger 1896