Myledaphus bipartitus

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
- MyledaphusPBDB
- Diet
- carnivorePBDB, for Chondrichthyes
- Life habit
- nektonicPBDB, for Chondrichthyes
- Motility
- actively mobilePBDB, for Chondrichthyes
Time the record covers
At most 18 million years on record.
Every occurrence read is dated to somewhere between 83.6 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
187 occurrences of Myledaphus bipartitus 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
187 occurrences- Late Cretaceous100%
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
22 formations
- Hell Creek Formation · Montana Group44
- Dinosaur Park Formation · Belly River Group37
- Lance Formation27
- Oldman Formation · Belly River Group18
- Mesaverde Formation14
- Judith River Formation · Montana Group12
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The named rock units Myledaphus bipartitus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Myledaphus bipartitus and its relatives
Late CretaceousWhere Myledaphus bipartitus and its relatives were recorded in the Late Cretaceous.
Found in the same rock
590 taxa- Scapherpeton tectum90 sites
- Trionychidae85 sites
- Baenidae78 sites
- Lepisosteus occidentalis78 sites
- Opisthotriton kayi72 sites
- Teleostei72 sites
- Ceratopsidae70 sites
- Chelydridae68 sites
- Champsosaurus65 sites
- Hadrosauridae59 sites
- Anura57 sites
- Belonostomus longirostris56 sites
- Paralbula casei54 sites
- Paronychodon53 sites
- Coriops amnicolus50 sites
- Multituberculata49 sites
- Borealosuchus sternbergii47 sites
- Brachychampsa montana47 sites
- Cyclurus fragosus46 sites
- Lepisosteus44 sites
- Theropoda44 sites
- Adocus43 sites
- Crocodylia39 sites
- Meristodonoides montanensis39 sites
The Paleobiology Database records 186 sites for Myledaphus bipartitus, 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
47 references- Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming24
- Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota22
- Vertebrate microsite assemblages (exclusive of mammals) from the Foremost and Oldman Formations of the Judith River Group (Campanian) of southeastern Alberta: an illustrated guide16
- Paleontology of the Judith River Formation (Campanian) of Dinosaur National Park, Alberta, Canada: evidence from vertebrate microfossil locality15
- Paleoecology of an estuarine, incised-valley fill in the Dinosaur Park Formation (Judith River Group, Upper Cretaceous) of southern Alberta, Canada14
- A new selachian fauna from the late Campanian of Wyoming (Teapot Sandstone Member, Mesaverde Formation, Big Horn Basin)13
- Vertebrate faunal changes through Lancian and Puercan time in southern Wyoming12
- Fossil Vertebrate Collections11
- A new selachian fauna from the Judith River Formation (Campanian) of Montana10
- Microvertebrate sites: progress and prospectus5
- Stratigraphy and paleontology of the Cretaceous Hell Creek Formation, Stumpf site, Morton County, North Dakota3
- An aniliid snake and associated vertebrates from the Campanian of New Mexico3
Each of the 187 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. 35 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 Myledaphus bipartitus
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
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 itMyledaphus through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Cope 1876