Rhombodus

Rhombodus is a prehistoric genus of ray belonging to the family Rhombodontidae.

Rhombodus

Hectonichus · CC BY-SA 3.0 · 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
RhombodontidaePBDB
Diet
carnivorePBDB, for Myliobatiformes
Life habit
nektobenthicPBDB, for Myliobatiformes
Motility
actively mobilePBDB, for Myliobatiformes

Time the record covers

At least 12 million years on record.

The record covers at least 72.2 Mya to 59.24 Mya. No occurrence read is dated outside 85.7 Mya to 56 Mya.

Late Cretaceous — about 122 of 126 occurrencesLate CretaceousPaleocene — about 4 of 126 occurrencesPaleoceneEocene — about 0 of 126 occurrences86–85 Mya — about 0.0 occurrences85–84 Mya — about 0.1 occurrences84–83 Mya — about 1 occurrence83–82 Mya — about 2 occurrences82–81 Mya — about 2 occurrences81–80 Mya — about 2 occurrences80–79 Mya — about 2 occurrences79–78 Mya — about 2 occurrences78–77 Mya — about 2 occurrences77–76 Mya — about 2 occurrences76–75 Mya — about 2 occurrences75–74 Mya — about 2 occurrences74–73 Mya — about 2 occurrences73–72 Mya — about 7 occurrences72–71 Mya — about 16 occurrences71–70 Mya — about 16 occurrences70–69 Mya — about 16 occurrences69–68 Mya — about 16 occurrences68–67 Mya — about 16 occurrences67–66 Mya — about 11 occurrences66–65 Mya — about 0.4 occurrences65–64 Mya — about 0.4 occurrences64–63 Mya — about 0.4 occurrences63–62 Mya — about 0.4 occurrences62–61 Mya — about 0.4 occurrences61–60 Mya — about 0.4 occurrences60–58 Mya — about 0.3 occurrences58–57 Mya — about 0.3 occurrences57–56 Mya — about 0.3 occurrences56–55 Mya — about 0.1 occurrences72.2 Mya59.24 Mya86.3 Mya55.4 Mya

126 occurrences of Rhombodus 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

126 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

41 formations

Peedee — 34.81°N, 77.98°WPeedee — 33.67°N, 79.83°WPeedee — 34.95°N, 78.11°WPeedee — 34.38°N, 77.83°WNavesink — 40.35°N, 74.17°WNavesink — 40.33°N, 74.26°WNavesink — 40.38°N, 74.21°WMarshalltown — 40.30°N, 74.30°WMarshalltown — 39.55°N, 75.65°WCouche III — 32.88°N, 6.62°WCouche III — 32.85°N, 6.63°WCouche III — 32.67°N, 6.67°WFox Hills — 46.47°N, 99.58°WFox Hills — 44.52°N, 102.39°WCap de Naze — 14.54°N, 17.10°WHornerstown — 39.76°N, 75.13°WMishash — 30.87°N, 34.94°EMishash — 30.77°N, 34.91°EMount Laurel — 40.26°N, 74.27°WTar Heel — 34.57°N, 78.50°WTar Heel — 34.61°N, 78.60°WKemp Clay — 33.21°N, 95.92°WValdenoceda — 42.90°N, 3.30°WTorme — 42.67°N, 2.63°WMaastricht — 50.84°N, 5.79°EMaastricht — 50.85°N, 5.69°EMaastricht — 50.80°N, 5.68°ETremp — 42.18°N, 1.79°ETremp — 41.12°N, 1.01°EVincentown — 39.97°N, 74.68°WVitoria — 42.66°N, 2.63°WBlufftown — 32.16°N, 85.03°WNew Egypt — 40.09°N, 74.55°WPhosphorite Unit — 32.02°N, 36.03°ELameta — 20.35°N, 79.05°EFiguerola — 41.12°N, 1.01°ECusseta — 32.14°N, 84.95°W

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The named rock units Rhombodus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 further formations hold fewer occurrences each and are not listed. 57 occurrences have no formation on record, which is common for older literature.

Rhombodus and its relatives

Late Cretaceous

Where Rhombodus and its relatives were recorded in the Late Cretaceous.

Found in the same rock

831 taxa

The Paleobiology Database records 102 sites for Rhombodus, 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

57 references

Each of the 126 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. 45 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 Rhombodus

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Rhombodus 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.

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 itRhombodontidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Dames 1881