Neotrygon

Neotrygon is a genus of stingrays in the family Dasyatidae commonly known as the maskrays, native to the Indo-West Pacific. They are so named because of a distinctive color pattern around their eyes, resembling a mask. The species in this genus were originally placed in the genus Dasyatis by most authors. However, recent morphological and molecular analyses have conclusively showed that they represent a distinct group and so the genus Neotrygon was resurrected for them.

Neotrygon

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
NeotrygoninaePBDB
Diet
carnivorePBDB, for Myliobatiformes
Life habit
nektobenthicPBDB, for Myliobatiformes
Motility
actively mobilePBDB, for Myliobatiformes

Time the record covers

At most 3.9 million years on record.

Every occurrence read is dated to somewhere between 37.71 Mya and 33.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Eocene — about 8 of 8 occurrencesEoceneOligocene — about 0 of 8 occurrences38–38 Mya — about 0.3 occurrences38–37 Mya — about 0.3 occurrences37–37 Mya — about 0.3 occurrences37–37 Mya — about 0.3 occurrences37–37 Mya — about 0.3 occurrences37–37 Mya — about 0.3 occurrences37–37 Mya — about 0.3 occurrences37–36 Mya — about 0.3 occurrences36–36 Mya — about 0.3 occurrences36–36 Mya — about 0.3 occurrences36–36 Mya — about 0.3 occurrences36–36 Mya — about 0.3 occurrences36–36 Mya — about 0.3 occurrences36–35 Mya — about 0.3 occurrences35–35 Mya — about 0.3 occurrences35–35 Mya — about 0.3 occurrences35–35 Mya — about 0.3 occurrences35–35 Mya — about 0.3 occurrences35–35 Mya — about 0.3 occurrences35–35 Mya — about 0.3 occurrences35–34 Mya — about 0.3 occurrences34–34 Mya — about 0.3 occurrences34–34 Mya — about 0.3 occurrences34–34 Mya — about 0.3 occurrences38.21 Mya33.4 Mya

8 occurrences of Neotrygon 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

8 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

3 formations

Birket Qarun — 29.28°N, 30.03°EGehannam — 29.32°N, 30.07°EQasr el-Sagha — 29.32°N, 30.05°EQasr el-Sagha — 29.30°N, 29.99°E

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The named rock units Neotrygon has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Neotrygon and its relatives

Eocene

Where Neotrygon and its relatives were recorded in the Eocene.

Found in the same rock

28 taxa

The Paleobiology Database records 1 site for Neotrygon, 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

1 reference

Each of the 8 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Neotrygon

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

No 3D scan of Neotrygon 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 itNeotrygoninae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Castelnau 1873