Trachurus declivis

The greenback horse mackerel or greenback scad is a species of jack in the family Carangidae, found around western and southern Australia, and around New Zealand, from the surface to depths of 460 m. Its length is up to 64 cm.

Trachurus declivis

Richard Ling · CC BY-SA 2.0 · 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
TrachurusPBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At most 340 thousand years on record.

The one occurrence read is dated to somewhere between 340 ka and 0 Mya, which is a dating window rather than a span.

Pleistocene — about 1 of 1 occurrencePleistoceneHolocene — about 0 of 1 occurrence364 ka–336 ka Mya — about 0.0 occurrences336 ka–308 ka Mya — about 0.1 occurrences308 ka–280 ka Mya — about 0.1 occurrences280 ka–252 ka Mya — about 0.1 occurrences252 ka–224 ka Mya — about 0.1 occurrences224 ka–196 ka Mya — about 0.1 occurrences196 ka–168 ka Mya — about 0.1 occurrences168 ka–140 ka Mya — about 0.1 occurrences140 ka–112 ka Mya — about 0.1 occurrences112 ka–84 ka Mya — about 0.1 occurrences84 ka–56 ka Mya — about 0.1 occurrences56 ka–28 ka Mya — about 0.1 occurrences28 ka–0 Mya — about 0.1 occurrences840 ka0 Mya

1 occurrence of Trachurus declivis on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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.

Trachurus declivis and its relatives

Pleistocene

Where Trachurus declivis and its relatives were recorded in the Pleistocene.

Found in the same rock

17 taxa

The Paleobiology Database records 1 site for Trachurus declivis, 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 the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Trachurus declivis

Credit
Richard Ling
Licence
CC BY-SA 2.0
Commercial use
the licence allows it

No 3D scan of Trachurus declivis was found in MorphoSource and Sketchfab.

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 itTrachurus through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Jenyns 1841)