Hamulus
via iDigBio · CC BY-NC-SA · 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
- SerpulimorphaPBDB
- Diet
- suspension feederPBDB, for Serpulimorpha
- Life habit
- epifaunalPBDB, for Serpulimorpha
- Motility
- stationary, epibiontPBDB, for Serpulimorpha
- Vision
- limitedPBDB, for Polychaeta
- Environment
- marine,brackishPBDB, for Serpulimorpha
Time the record covers
At least 106 million years on record.
The record covers at least 165.3 Mya to 59.24 Mya. No occurrence read is dated outside 170.9 Mya to 56 Mya.
295 occurrences of Hamulus 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
295 occurrences- Middle Jurassic1%
- Early Cretaceousunder 1%
- Late Cretaceous98%
- Paleoceneunder 1%
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
30 formations
- Providence Formation63
- Prairie Bluff Formation · Selma Group40
- Corsicana Marl Formation36
- Peedee Formation32
- Severn Formation23
- Chiwapa Formation21
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The named rock units Hamulus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 further formations hold fewer occurrences each and are not listed. 2 occurrences have no formation on record, which is common for older literature.
Hamulus and its relatives
Late CretaceousWhere Hamulus and its relatives were recorded in the Late Cretaceous.
Found in the same rock
1,071 taxa- Anomia argentaria163 sites
- Syncyclonema125 sites
- Cubitostrea tecticosta117 sites
- Crenella serica109 sites
- Serpula106 sites
- Exogyra (Exogyra) costata105 sites
- Cymbophora103 sites
- Veniella conradi103 sites
- Nuculana101 sites
- Caestocorbula (Caestocorbula) crassaplica95 sites
- Crassatella vadosa95 sites
- Turritella94 sites
- Bryozoa88 sites
- Vertebrata88 sites
- Cyprimeria87 sites
- Granocardium84 sites
- Gabbigonia eufaulensis81 sites
- Camptonectes bubonis79 sites
- Corbula78 sites
- Turritella trilira78 sites
- Linearis77 sites
- Striarca75 sites
- Turritella vertebroides73 sites
- Pseudolimea reticulata72 sites
The Paleobiology Database records 240 sites for Hamulus, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf117
- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain61
- Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain39
- The Black Creek-Peedee formational contact (Upper Cretaceous) in the Cape Fear river region of North Carolina13
- Cretaceous deposits of the eastern gulf region and species of Exogyra from the eastern gulf region and the Carolinas13
- The Cretaceous formations8
- Paleoecology of the Delaware Valley region. Part II: Cretaceous to Quartenary6
- Stratigraphy of the outcropping post-Magothy Upper Cretaceous formations in Southern New Jersey an Northern Delmarva peninsula, Delaware and Maryland6
- Fabric of the Cretaceous-Tertiary Marine Macrofaunal Transition at Braggs, Alabama5
- Changes in Late Cretaceous - early Tertiary benthic marine assemblages: analyses from the North American coastal plain shallow-shelf4
- The larger invertebrate fossils of the Navarro group of Texas4
- The fauna of the Ripley formation on Coon creek, Tennessee4
Each of the 295 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 content2
Picture of Hamulus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC BY-NC-SA
- Commercial use
- the licence does not allow it
3D model
- Source
- Sketchfab
- Credit
- Shellie Luallin
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
This is what the site found, which is not the same as what exists.
Keep going
Everything alive alongside itSerpulimorpha through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.