Arechia

Arechia is an extinct genus of stingaree from the Paleogene epoch. It is known from two species that inhabited the northern Tethys Ocean during the Early Eocene. Isolated teeth of this genus are also known, potentially as late as the Early Oligocene.

Arechia

Ghedoghedo · CC BY-SA 4.0 · 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
DasyatoideaPBDB
Diet
carnivorePBDB, for Myliobatiformes
Life habit
nektobenthicPBDB, for Myliobatiformes
Motility
actively mobilePBDB, for Myliobatiformes

Time the record covers

At least 14 million years on record.

The record covers at least 56 Mya to 41.03 Mya. No occurrence read is dated outside 59.24 Mya to 37.71 Mya.

Paleocene — about 1 of 16 occurrencesPaleoceneEocene — about 15 of 16 occurrencesEocene60–59 Mya — about 0.1 occurrences59–58 Mya — about 0.2 occurrences58–57 Mya — about 0.2 occurrences57–57 Mya — about 0.2 occurrences57–56 Mya — about 0.3 occurrences56–55 Mya — about 1 occurrence55–54 Mya — about 1 occurrence54–54 Mya — about 1 occurrence54–53 Mya — about 1 occurrence53–52 Mya — about 1 occurrence52–51 Mya — about 1 occurrence51–51 Mya — about 1 occurrence51–50 Mya — about 1 occurrence50–49 Mya — about 1 occurrence49–48 Mya — about 1 occurrence48–48 Mya — about 0.7 occurrences48–47 Mya — about 0.2 occurrences47–46 Mya — about 0.2 occurrences46–45 Mya — about 0.2 occurrences45–45 Mya — about 0.2 occurrences45–44 Mya — about 0.2 occurrences44–43 Mya — about 0.2 occurrences43–42 Mya — about 0.2 occurrences42–42 Mya — about 0.2 occurrences42–41 Mya — about 0.2 occurrences41–40 Mya — about 0.2 occurrences40–39 Mya — about 0.2 occurrences39–39 Mya — about 0.2 occurrences39–38 Mya — about 0.2 occurrences38–37 Mya — about 0.1 occurrences56 Mya41.03 Mya59.7 Mya37.2 Mya

16 occurrences of Arechia on record, most of them in the Eocene. 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

16 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

4 formations

Couche I — 32.85°N, 6.63°WCouche I — 32.72°N, 6.78°EMatam — 15.32°N, 13.03°WJbel Tagount — 31.42°N, 6.31°WDongen — 53.16°N, 6.22°E

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The named rock units Arechia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.

Arechia and its relatives

Eocene

Where Arechia and its relatives were recorded in the Eocene.

Found in the same rock

143 taxa

The Paleobiology Database records 16 sites for Arechia, 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

7 references

Each of the 16 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 content1

Picture of Arechia

Credit
Ghedoghedo
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Arechia 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 itDasyatoidea through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cappetta 1983