Hadrodelphis

Hadrodelphis is an extinct genus of dolphin once assigned to the paraphyletic/polyphyletic family Kentriodontidae. Remains have been found in the middle Miocene (Langhian) Calvert Formation of United States.

Hadrodelphis

via iDigBio · 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
DelphinidaPBDB
Diet
carnivorePBDB, for Odontoceti
Life habit
aquatic, depth=surfacePBDB, for Cetacea
Motility
actively mobilePBDB, for Cetacea
Environment
marine,freshwaterPBDB, for Odontoceti

Time the record covers

At least 6.5 million years on record.

The record covers at least 13.82 Mya to 7.246 Mya. No occurrence read is dated outside 15.98 Mya to 3.6 Mya.

Miocene — about 11 of 11 occurrencesMiocenePliocene — about 0 of 11 occurrencesPliocene16–16 Mya — about 0.6 occurrences16–15 Mya — about 0.7 occurrences15–15 Mya — about 0.7 occurrences15–14 Mya — about 0.7 occurrences14–14 Mya — about 0.7 occurrences14–13 Mya — about 0.7 occurrences13–13 Mya — about 0.7 occurrences13–12 Mya — about 0.7 occurrences12–12 Mya — about 0.7 occurrences12–12 Mya — about 0.7 occurrences12–11 Mya — about 0.1 occurrences11–11 Mya — about 0.1 occurrences11–10 Mya — about 0.1 occurrences10–9.8 Mya — about 0.1 occurrences9.8–9.3 Mya — about 0.1 occurrences9.3–8.9 Mya — about 0.3 occurrences8.9–8.5 Mya — about 0.3 occurrences8.5–8.0 Mya — about 0.3 occurrences8.0–7.6 Mya — about 0.3 occurrences7.6–7.1 Mya — about 0.3 occurrences7.1–6.7 Mya — about 0.4 occurrences6.7–6.2 Mya — about 0.4 occurrences6.2–5.8 Mya — about 0.4 occurrences5.8–5.3 Mya — about 0.4 occurrences5.3–4.9 Mya — about 0.2 occurrences4.9–4.4 Mya — about 0.1 occurrences4.4–4.0 Mya — about 0.1 occurrences4.0–3.5 Mya — about 0.1 occurrences13.82 Mya7.246 Mya16.5 Mya3.1 Mya

11 occurrences of Hadrodelphis on record, most of them in the Miocene. 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

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

4 formations

Calvert — 38.60°N, 77.16°WCalvert — 38.50°N, 76.51°WCalvert — 37.93°N, 77.51°WCalvert — 38.16°N, 76.83°WPeace River — 27.90°N, 81.80°WCurré — 8.85°N, 83.08°WEastover — 38.16°N, 76.83°W

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The named rock units Hadrodelphis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Hadrodelphis and its relatives

Miocene

Where Hadrodelphis and its relatives were recorded in the Miocene.

Found in the same rock

280 taxa

The Paleobiology Database records 11 sites for Hadrodelphis, 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

10 references

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 Hadrodelphis

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Hadrodelphis 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 itDelphinida through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kellogg 1966