Lonchidion

Lonchidion is a genus of extinct hybodont in the family Lonchidiidae. The genus first appears in the fossil record during the Middle Triassic (Ladinian) and was among the last surviving hybodont genera, with its youngest known fossils dating to the very end of the Cretaceous (Maastrichtian).

Lonchidion

Arratia et al., 2002 · 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
LonchidiidaePBDB
Diet
carnivorePBDB, for Chondrichthyes
Life habit
nektonicPBDB, for Chondrichthyes
Motility
actively mobilePBDB, for Chondrichthyes

Time the record covers

At least 155 million years on record.

The record covers at least 227.3 Mya to 72.2 Mya. No occurrence read is dated outside 237 Mya to 66 Mya.

Middle Triassic — about 0 of 170 occurrencesLate Triassic — about 13 of 170 occurrencesLate TriassicEarly Jurassic — about 2 of 170 occurrencesEarly JurassicMiddle Jurassic — about 1 of 170 occurrencesLate Jurassic — about 3 of 170 occurrencesLate JurassicEarly Cretaceous — about 52 of 170 occurrencesEarly CretaceousLate Cretaceous — about 98 of 170 occurrencesLate CretaceousPaleocene — about 0 of 170 occurrences240–234 Mya — about 0.4 occurrences234–229 Mya — about 1.0 occurrences229–223 Mya — about 2 occurrences223–217 Mya — about 3 occurrences217–211 Mya — about 3 occurrences211–205 Mya — about 3 occurrences205–199 Mya — about 1.0 occurrences199–193 Mya — about 0.5 occurrences193–187 Mya — about 0.5 occurrences187–181 Mya — about 0.5 occurrences181–175 Mya — about 0.6 occurrences175–169 Mya — about 0.4 occurrences169–163 Mya — about 0.1 occurrences163–157 Mya — about 0.1 occurrences157–152 Mya — about 0.1 occurrences152–146 Mya — about 0.7 occurrences146–140 Mya — about 5 occurrences140–134 Mya — about 23 occurrences134–128 Mya — about 0.8 occurrences128–122 Mya — about 9 occurrences122–116 Mya — about 10 occurrences116–110 Mya — about 5 occurrences110–104 Mya — about 1 occurrence104–98 Mya — about 2 occurrences98–92 Mya — about 1 occurrence92–86 Mya — about 0.6 occurrences86–80 Mya — about 19 occurrences80–74 Mya — about 20 occurrences74–69 Mya — about 37 occurrences69–63 Mya — about 20 occurrences227.3 Mya72.2 Mya240 Mya63 Mya

170 occurrences of Lonchidion 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

170 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

Hell Creek — 47.80°N, 106.10°WHell Creek — 46.03°N, 103.77°WHell Creek — 46.38°N, 103.96°WHell Creek — 45.95°N, 103.96°WHell Creek — 46.41°N, 103.94°WHell Creek — 46.10°N, 103.30°WHell Creek — 46.46°N, 104.02°WHell Creek — 46.33°N, 103.90°WHell Creek — 47.55°N, 107.13°WHell Creek — 47.57°N, 107.10°WHell Creek — 47.52°N, 106.40°WHell Creek — 47.52°N, 107.18°WHell Creek — 47.07°N, 106.92°WHell Creek — 47.53°N, 106.88°WHell Creek — 46.90°N, 101.50°WHell Creek — 46.21°N, 103.77°WHell Creek — 45.66°N, 105.08°WHell Creek — 45.50°N, 103.10°WHell Creek — 45.64°N, 103.49°WHell Creek — 45.00°N, 103.19°WHell Creek — 47.61°N, 106.90°WHell Creek — 45.05°N, 101.97°WDurlston — 50.60°N, 1.95°WDurlston — 50.62°N, 2.25°WMesaverde — 42.85°N, 107.28°WMesaverde — 44.08°N, 107.73°WMesaverde — 44.10°N, 107.75°WMesaverde — 44.17°N, 107.81°WAguja — 29.32°N, 103.52°WAguja — 29.10°N, 103.17°WAguja — 29.30°N, 103.57°WAguja — 29.46°N, 103.56°WLance — 43.12°N, 104.64°WLance — 41.57°N, 108.67°WLance — 43.15°N, 104.57°WLance — 43.13°N, 104.49°WLance — 43.20°N, 104.47°WLance — 43.80°N, 104.62°WLance — 43.00°N, 104.50°WChinle — 34.44°N, 109.46°WChinle — 34.95°N, 109.76°WChinle — 34.68°N, 109.58°WChinle — 36.33°N, 106.47°WFerris — 41.94°N, 106.88°WFerris — 41.80°N, 107.00°WAtherfield Clay — 50.62°N, 1.34°WAtherfield Clay — 51.23°N, 0.25°WFruitland — 36.49°N, 108.51°WFruitland — 36.27°N, 108.26°WTecovas — 33.45°N, 101.17°WTecovas — 33.42°N, 101.15°WMilk River — 49.10°N, 111.80°WKsar Metlili — 32.70°N, 3.22°WMarshalltown — 39.55°N, 75.65°WAntlers — 33.28°N, 97.62°WAntlers — 33.50°N, 97.58°WAntlers — 34.15°N, 95.82°WEutaw — 32.38°N, 84.93°WEutaw — 32.77°N, 87.87°WEutaw — 33.49°N, 88.39°WNavesink — 40.35°N, 74.17°WNavesink — 40.38°N, 74.21°WKota — 19.27°N, 79.52°EKota — 19.11°N, 79.85°EArtoles — 40.82°N, 0.28°WWadhurst Clay — 50.86°N, 0.44°ECloverly — 44.51°N, 107.90°WCloverly — 44.50°N, 107.82°WMasuk — 38.05°N, 110.94°WHythe — 51.24°N, 0.05°WHythe — 51.24°N, 0.10°WLaramie — 40.39°N, 104.49°WBlufftown — 32.16°N, 85.03°W

Loading coastlines…

The named rock units Lonchidion 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. 7 occurrences have no formation on record, which is common for older literature.

Lonchidion and its relatives

Late Cretaceous

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

Found in the same rock

1,190 taxa

The Paleobiology Database records 156 sites for Lonchidion, 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

78 references

Each of the 170 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. 66 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 Lonchidion

Credit
Arratia et al., 2002
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

3D model

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

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 itLonchidiidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Estes 1964