Hoplitoidea
Hoplitoidea, formerly Hoplitaceae, is a superfamily of mostly Upper Cretaceous ammonites comprising families united by a similar suture pattern with multiple similar elements that tend to decrease in size going toward the umbilicus, at the inner edge of any whorl, and which are typically in a straight line. Sutural elements are commonly ammonitic, but in some saddles and in others both saddles and lobes are smooth and undivided. Shells are variable in form, both ribbed, evolute forms and smooth, involute forms are included.
Hectonichus · 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
- AmmonitinaPBDB
- Diet
- carnivorePBDB, for Ammonoidea
- Life habit
- nektonicPBDB, for Ammonoidea
- Motility
- fast-movingPBDB, for Ammonoidea
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At least 64 million years on record.
The record covers at least 137.05 Mya to 72.2 Mya. No occurrence read is dated outside 149.2 Mya to 66 Mya.
1,119 occurrences of Hoplitoidea on record, most of them in the Late 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
1,119 occurrences- Late Jurassicunder 1%
- Early Cretaceous39%
- Late Cretaceous61%
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
181 formations
- Folkestone Formation · Lower Greensand Group61
- Grès verts helvétiques Formation58
- Lepine Formation44
- Mancos Shale Formation28
- Carolinefjellet Formation27
- Aitamir Formation24
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The named rock units Hoplitoidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 157 further formations hold fewer occurrences each and are not listed. 259 occurrences have no formation on record, which is common for older literature.
Hoplitoidea and its relatives
Late CretaceousWhere Hoplitoidea and its relatives were recorded in the Late Cretaceous.
Found in the same rock
1,288 taxa- Inoceramus47 sites
- Placenticeras47 sites
- Turritella29 sites
- Schloenbachia varians22 sites
- Cymbophora21 sites
- Desmoceras (Desmoceras) latidorsatum21 sites
- Holaster20 sites
- Corbula19 sites
- Gnesioceramus cripsii18 sites
- Anomia17 sites
- Douvilleiceras17 sites
- Exogyra17 sites
- Hoplites17 sites
- Inoceramus virgatus17 sites
- Metengonoceras dumbli17 sites
- Gastropoda16 sites
- Hamites16 sites
- Inoceramidae16 sites
- Lucina16 sites
- Schloenbachia varians subtuberculata16 sites
- Anchura15 sites
- Camptonectes15 sites
- Cyprimeria15 sites
- Drepanocheilus15 sites
The Paleobiology Database records 739 sites for Hoplitoidea, and this reads 240 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
245 references- Les grès verts helvétiques (Aptien moyen-Albien supérieur) de Haute-Savoie, Valais et Vaud (Alpes occidentales franco-suisses)83
- The stratigraphical palaeontology of the Lower Greensand72
- A correlation of the uppermost Albian and the Cenomanian of South-West England69
- New or formerly poorly known, biochronologically and paleobiogeographically important gastroplitinid and cleoniceratinid (Ammonitida) taxa from Middle Albian rocks of mid-western and Arctic Canada67
- Ammonite faunas and stratigraphy of Lower Cretaceous (Albian) rocks in southern Spitsbergen26
- Campanian and Maastrichtian ammonites from northern Aquitaine, France24
- Geologie de Madagascar I. Les Terrains Sedimentaires19
- Larger invertebrate fossils of the Woodbine formation (Cenomanian) of Texas18
- The paleoecology of the Cenomanian-Turonian (Cretaceous) stage boundary extinctions at Black Mesa, Arizona17
- Engonoceratid ammonites from the Glen Rose Limestone, Walnut Clay, Goodland Limestone, and Comanche Peak Limestone (Albian) in Texas16
- Ammonite faunas, biostratigraphy, and sequence stratigraphy of the Coniacian-Santonian of the Corbières (NE Pyrénées)16
- Late Albian ammonites from the Aitamir Formation (Koppeh Dagh, northeast Iran)15
Each of the 1,119 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. 233 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 Hoplitoidea
- Source
- Wikipedia/Commons
- Credit
- Hectonichus
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Hoplitoidea 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.
The description on this site
- Source
- Wikipedia, “Hoplitoidea”
- 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 itAmmonitina through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Douvillé 1890