Bumastus orbicaudatus

via iDigBio · CC0 · 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
- BumastusPBDB
- Diet
- carnivorePBDB, for Corynexochida
- Life habit
- nektobenthicPBDB, for Corynexochida
- Motility
- actively mobilePBDB, for Corynexochida
- Vision
- well-developedPBDB, for Styginidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 600 thousand years on record.
The record covers at least 450.2 Mya to 449.6 Mya. No occurrence read is dated outside 457.3 Mya to 445.5 Mya.
11 occurrences of Bumastus orbicaudatus 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
11 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
6 formations
- Prosser Limestone Formation2
- Wise Lake Formation · Galena Group2
- Dubuque Formation · Galena Group2
- Scales Shale Formation · Maquoketa Group2
- Dunleith Formation · Galena Group2
- Vaureal Formation1
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The named rock units Bumastus orbicaudatus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Bumastus orbicaudatus and its relatives
OrdovicianWhere Bumastus orbicaudatus and its relatives were recorded in the Ordovician.
Found in the same rock
122 taxa- Glyptorthis bellarugosa9 sites
- Isotelus gigas9 sites
- Pseudolingula iowensis9 sites
- Rafinesquina deltoidea9 sites
- Sowerbyella minnesotensis9 sites
- Strophomena trilobata9 sites
- Hiscobeccus capax8 sites
- Erratencrinurus vigilans7 sites
- Flexicalymene (Flexicalymene) senaria7 sites
- Ceraurinus icarus6 sites
- Ceraurus pleurexanthemus6 sites
- Isotelus susae6 sites
- Orbiculoidea6 sites
- Dinorthis meedsi5 sites
- Hesperorthis tricenaria5 sites
- Parastrophina5 sites
- Paucicrura rogata5 sites
- Austinella kankakensis4 sites
- Cyclospira bisulcata4 sites
- Heterorthina emacerata4 sites
- Illaenus4 sites
- Lingulasma philomela4 sites
- Megamyonia unicostata4 sites
- Nasutimena fluctuosa4 sites
The Paleobiology Database records 11 sites for Bumastus orbicaudatus, 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
3 references- Biostratigraphy of the Middle and Late Ordovician cephalopods of the Upper Mississippi Valley area5
- Brachiopods and trilobites of the Sardeson Beds in the Twin Cities5
- Geology of Anticosti Island1
Each of the 11 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. 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 Bumastus orbicaudatus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Bumastus orbicaudatus 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itBumastus through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Billings 1859)