Narcine

Narcine is a genus of electric rays in the family Narcinidae. These species have a rounded pectoral fin disc and two dorsal fins, the first usually smaller than the second and placed behind the pelvic fin bases. The tail is longer than the disc and has a lateral fold. The spiracles are close behind the eyes, the nasal flaps are merged into a flap in front of the mouth. The teeth are nearly flat, with a central point.

Narcine

SEFSC Pascagoula Laboratory; Collection of Brandi Noble, NOAA/NMFS/SEFSC. · Public Domain · 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
NarcinidaePBDB
Diet
carnivorePBDB, for Chondrichthyes
Life habit
nektonicPBDB, for Chondrichthyes
Motility
actively mobilePBDB, for Chondrichthyes

Time the record covers

At least 10 million years on record.

The record covers at least 48.07 Mya to 37.71 Mya. No occurrence read is dated outside 56 Mya to 33.9 Mya.

Paleocene — about 0 of 14 occurrencesEocene — about 14 of 14 occurrencesEoceneOligocene — about 0 of 14 occurrences57–56 Mya — about 0.1 occurrences56–55 Mya — about 0.1 occurrences55–54 Mya — about 0.1 occurrences54–53 Mya — about 0.1 occurrences53–53 Mya — about 0.1 occurrences53–52 Mya — about 0.1 occurrences52–51 Mya — about 0.1 occurrences51–50 Mya — about 0.1 occurrences50–50 Mya — about 0.1 occurrences50–49 Mya — about 0.1 occurrences49–48 Mya — about 0.2 occurrences48–47 Mya — about 0.3 occurrences47–46 Mya — about 0.3 occurrences46–46 Mya — about 0.3 occurrences46–45 Mya — about 0.3 occurrences45–44 Mya — about 0.3 occurrences44–43 Mya — about 0.3 occurrences43–43 Mya — about 0.3 occurrences43–42 Mya — about 0.3 occurrences42–41 Mya — about 0.3 occurrences41–40 Mya — about 0.1 occurrences40–40 Mya — about 0.1 occurrences40–39 Mya — about 0.1 occurrences39–38 Mya — about 0.1 occurrences38–37 Mya — about 1 occurrence37–36 Mya — about 2 occurrences36–36 Mya — about 2 occurrences36–35 Mya — about 2 occurrences35–34 Mya — about 2 occurrences34–33 Mya — about 0.6 occurrences48.07 Mya37.71 Mya56.5 Mya33.4 Mya

14 occurrences of Narcine on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

14 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

7 formations

Gehannam — 29.33°N, 30.08°EBirket Qarun — 29.28°N, 30.03°EQasr el-Sagha — 29.29°N, 29.99°ESamlat — 23.36°N, 16.03°WChambi — 35.19°N, 8.65°EMidawara — 29.08°N, 30.12°EMarnes de Miretrain — 43.69°N, 1.13°W

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The named rock units Narcine has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Narcine and its relatives

Eocene

Where Narcine and its relatives were recorded in the Eocene.

Found in the same rock

156 taxa

The Paleobiology Database records 5 sites for Narcine, 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

6 references

Each of the 14 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 content2

Picture of Narcine

Credit
SEFSC Pascagoula Laboratory; Collection of Brandi Noble, NOAA/NMFS/SEFSC.
Licence
Public Domain
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Narcine westaustraliensis · ROM:Fishes:67035

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 itNarcinidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Henle 1834