Delphyodontos dacriformes

Delphyodontos dacriformes is a prehistoric basal cartilaginous fish from the Late Mississippian-aged Bear Gulch Limestone Lagerstätte of Montana. The adult form is unknown, as the only fossil specimens are of aborted fetuses or recently born young. Sharp teeth and fecal matter in the fossils suggests that Delphyodontos practiced intrauterine cannibalism.

Delphyodontos dacriformes

Apokryltaros at English Wikipedia · CC BY 2.5 · 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
DelphyodontosPBDB
Diet
carnivorePBDB, for Holocephali
Life habit
nektobenthicPBDB, for Holocephali
Motility
actively mobilePBDB, for Holocephali

Time the record covers

At most 3.3 million years on record.

The one occurrence read is dated to somewhere between 326.9 Mya and 323.6 Mya, which is a dating window rather than a span.

Carboniferous — about 1 of 1 occurrenceCarboniferous327–327 Mya — about 0.0 occurrences327–327 Mya — about 0.0 occurrences327–327 Mya — about 0.0 occurrences327–326 Mya — about 0.0 occurrences326–326 Mya — about 0.0 occurrences326–326 Mya — about 0.0 occurrences326–326 Mya — about 0.0 occurrences326–326 Mya — about 0.0 occurrences326–326 Mya — about 0.0 occurrences326–326 Mya — about 0.0 occurrences326–325 Mya — about 0.0 occurrences325–325 Mya — about 0.0 occurrences325–325 Mya — about 0.0 occurrences325–325 Mya — about 0.0 occurrences325–325 Mya — about 0.0 occurrences325–325 Mya — about 0.0 occurrences325–325 Mya — about 0.0 occurrences325–324 Mya — about 0.0 occurrences324–324 Mya — about 0.0 occurrences324–324 Mya — about 0.0 occurrences324–324 Mya — about 0.0 occurrences324–324 Mya — about 0.0 occurrences324–324 Mya — about 0.0 occurrences324–324 Mya — about 0.0 occurrences327.4 Mya323.1 Mya

1 occurrence of Delphyodontos dacriformes on record, most of them in the Carboniferous. 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 occurrences

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

1 formation

Heath — 46.95°N, 108.96°W

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The named rock units Delphyodontos dacriformes has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Delphyodontos dacriformes and its relatives

Carboniferous

Where Delphyodontos dacriformes and its relatives were recorded in the Carboniferous.

Found in the same rock

43 taxa

The Paleobiology Database records 1 site for Delphyodontos dacriformes, 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

1 reference

Each of the 1 occurrence 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Delphyodontos dacriformes

Credit
Apokryltaros at English Wikipedia
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan of Delphyodontos dacriformes was found in Sketchfab.

Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

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 itDelphyodontos through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lund 1980