Jucha squalea

Jucha is an extinct genus of plesiosaur found in the Hauterivian Klimovka Formation of Russia. The type species, J. squalea, was one of the basalmost and oldest definitive elasmosaurs known to date.

Jucha squalea

Connor Ashbridge · 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
JuchaPBDB
Diet
carnivorePBDB, for Plesiosauria
Life habit
aquatic, depth=surfacePBDB, for Plesiosauria
Motility
actively mobilePBDB, for Plesiosauria
Environment
marinePBDB, for Plesiosauria

Time the record covers

At most 6.9 million years on record.

The one occurrence read is dated to somewhere between 132.6 Mya and 125.77 Mya, which is a dating window rather than a span.

Early Cretaceous — about 1 of 1 occurrenceEarly Cretaceous133–133 Mya — about 0.0 occurrences133–132 Mya — about 0.0 occurrences132–132 Mya — about 0.0 occurrences132–132 Mya — about 0.0 occurrences132–132 Mya — about 0.0 occurrences132–131 Mya — about 0.0 occurrences131–131 Mya — about 0.0 occurrences131–131 Mya — about 0.0 occurrences131–130 Mya — about 0.0 occurrences130–130 Mya — about 0.0 occurrences130–130 Mya — about 0.0 occurrences130–130 Mya — about 0.0 occurrences130–129 Mya — about 0.0 occurrences129–129 Mya — about 0.0 occurrences129–129 Mya — about 0.0 occurrences129–129 Mya — about 0.0 occurrences129–128 Mya — about 0.0 occurrences128–128 Mya — about 0.0 occurrences128–128 Mya — about 0.0 occurrences128–128 Mya — about 0.0 occurrences128–127 Mya — about 0.0 occurrences127–127 Mya — about 0.0 occurrences127–127 Mya — about 0.0 occurrences127–127 Mya — about 0.0 occurrences127–126 Mya — about 0.0 occurrences126–126 Mya — about 0.0 occurrences126–126 Mya — about 0.0 occurrences126–126 Mya — about 0.0 occurrences133.1 Mya125.3 Mya

1 occurrence of Jucha squalea on record, most of them in the Early 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

1 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

1 formation

Klimovka — 54.44°N, 48.39°E

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

Jucha squalea and its relatives

Early Cretaceous

Where Jucha squalea and its relatives were recorded in the Early Cretaceous.

Found in the same rock

2 taxa

The Paleobiology Database records 1 site for Jucha squalea, and this reads all of them. The number is how many of those sites it was catalogued from too.

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 1 occurrence 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 Jucha squalea

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

No 3D scan of Jucha squalea 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 itJucha through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Fischer et al. 2020