Ischyrhiza

Ischyrhiza is an extinct genus of sclerorhynchoid ray from the Late Cretaceous (Cenomanian-Maastrichtian).

Ischyrhiza

Uncredited · 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
SclerorhynchidaePBDB
Diet
carnivorePBDB, for Chondrichthyes
Life habit
nektonicPBDB, for Chondrichthyes
Motility
actively mobilePBDB, for Chondrichthyes

Time the record covers

At least 47 million years on record.

The record covers at least 106.3 Mya to 59.24 Mya. No occurrence read is dated outside 113.2 Mya to 56 Mya.

Early Cretaceous — about 1 of 149 occurrencesEarly CretaceousLate Cretaceous — about 147 of 149 occurrencesLate CretaceousPaleocene — about 1 of 149 occurrencesPaleoceneEocene — about 0 of 149 occurrences114–112 Mya — about 0.1 occurrences112–110 Mya — about 0.3 occurrences110–108 Mya — about 0.3 occurrences108–106 Mya — about 0.3 occurrences106–104 Mya — about 0.0 occurrences102–100 Mya — about 0.0 occurrences100–98 Mya — about 1 occurrence98–96 Mya — about 1 occurrence96–95 Mya — about 1 occurrence95–93 Mya — about 5 occurrences93–91 Mya — about 7 occurrences91–89 Mya — about 5 occurrences89–87 Mya — about 3 occurrences87–85 Mya — about 5 occurrences85–83 Mya — about 10 occurrences83–81 Mya — about 13 occurrences81–79 Mya — about 13 occurrences79–77 Mya — about 13 occurrences77–75 Mya — about 13 occurrences75–73 Mya — about 13 occurrences73–71 Mya — about 13 occurrences71–69 Mya — about 12 occurrences69–67 Mya — about 12 occurrences67–65 Mya — about 5 occurrences65–63 Mya — about 0.2 occurrences63–61 Mya — about 0.1 occurrences61–59 Mya — about 0.1 occurrences59–57 Mya — about 0.6 occurrences57–55 Mya — about 0.3 occurrences106.3 Mya59.24 Mya114 Mya55 Mya

149 occurrences of Ischyrhiza 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

149 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

49 formations

Mesaverde — 44.08°N, 107.74°WMesaverde — 44.10°N, 107.75°WMesaverde — 44.17°N, 107.81°WNavesink — 40.31°N, 74.22°WNavesink — 40.33°N, 74.26°WNavesink — 40.40°N, 74.13°WNavesink — 39.95°N, 74.79°WNavesink — 40.40°N, 74.02°WNavesink — 40.38°N, 74.21°WJudith River — 46.10°N, 109.10°WJudith River — 48.03°N, 109.01°WJudith River — 47.79°N, 108.94°WJudith River — 48.01°N, 108.91°WJudith River — 48.25°N, 109.30°WJudith River — 47.74°N, 108.96°WQuiriquina — 36.61°S, 73.06°WQuiriquina — 35.79°S, 72.57°WQuiriquina — 36.72°S, 73.12°WQuiriquina — 36.62°S, 72.95°WQuiriquina — 33.36°S, 71.68°WCarlile Shale — 39.89°N, 98.03°WCarlile Shale — 39.78°N, 98.15°WCarlile Shale — 42.74°N, 97.03°WCarlile Shale — 44.09°N, 104.68°WForemost — 49.13°N, 110.87°WForemost — 50.07°N, 111.14°WForemost — 49.95°N, 111.42°WForemost — 50.41°N, 110.29°WMarshalltown — 40.30°N, 74.30°WMarshalltown — 39.55°N, 75.65°WMarshalltown — 40.00°N, 74.82°WMount Laurel — 40.12°N, 74.55°WMount Laurel — 40.26°N, 74.27°WMount Laurel — 40.38°N, 74.21°WMount Laurel — 39.56°N, 75.63°WDinosaur Park — 50.81°N, 111.32°WDinosaur Park — 50.78°N, 111.36°WTar Heel — 34.57°N, 78.50°WTar Heel — 34.61°N, 78.60°WEutaw — 32.38°N, 84.93°WEutaw — 33.52°N, 88.40°WMerchantville — 39.95°N, 74.99°WMerchantville — 39.54°N, 75.73°WMerchantville — 39.92°N, 75.06°WAguja — 29.10°N, 103.17°WAguja — 29.46°N, 103.56°WCrevasse Canyon — 35.20°N, 107.05°WPeedee — 34.81°N, 77.98°WPeedee — 34.38°N, 77.83°WBissekty — 42.12°N, 62.66°EEl Molino — 17.69°S, 65.94°WEl Molino — 18.14°S, 65.76°WSevern — 38.91°N, 76.85°WSevern — 38.96°N, 76.71°WDukamaje — 15.41°N, 5.73°EDukamaje — 15.47°N, 6.26°EGraneros Shale — 40.01°N, 97.17°WGraneros Shale — 38.93°N, 98.91°WAtco — 32.53°N, 96.99°WVincentown — 39.97°N, 74.68°WAguja — 28.94°N, 103.37°WPoint Lookout — 35.20°N, 107.05°W

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The named rock units Ischyrhiza has been recovered from, largest first. Drawn where the rock is now, not where it formed. 25 further formations hold fewer occurrences each and are not listed. 19 occurrences have no formation on record, which is common for older literature.

Ischyrhiza and its relatives

Late Cretaceous

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

Found in the same rock

1,240 taxa

The Paleobiology Database records 136 sites for Ischyrhiza, 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

83 references

Each of the 149 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. 71 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 content2

Picture of Ischyrhiza

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

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 itSclerorhynchidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Leidy 1856)