Hypogaleus hyugaensis

The blacktip tope, also known as pencil shark or blacktip topeshark, is a houndshark of the family Triakidae, and the only member of the genus Hypogaleus. It is found in the deep waters of the continental shelf in the Indo-West Pacific, from East Africa to Japan, at depths between 40 and 230 m. It can grow up to a length of 1.27 m.

Hypogaleus hyugaensis

CSIRO National Fish Collection · CC BY 3.0 · 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
Also called
blacktip topePBDB
Sits inside
HypogaleusPBDB
Diet
carnivorePBDB, for Carcharhiniformes
Life habit
nektonicPBDB, for Carcharhiniformes
Motility
actively mobilePBDB, for Carcharhiniformes

Time the record covers

At most 763 thousand years on record.

The one occurrence read is dated to somewhere between 774 ka and 11.7 ka, which is a dating window rather than a span.

Pleistocene — about 1 of 1 occurrencePleistoceneHolocene — about 0 of 1 occurrence807 ka–764 ka Mya — about 0.0 occurrences764 ka–722 ka Mya — about 0.1 occurrences722 ka–679 ka Mya — about 0.1 occurrences679 ka–637 ka Mya — about 0.1 occurrences637 ka–595 ka Mya — about 0.1 occurrences595 ka–552 ka Mya — about 0.1 occurrences552 ka–510 ka Mya — about 0.1 occurrences510 ka–467 ka Mya — about 0.1 occurrences467 ka–425 ka Mya — about 0.1 occurrences425 ka–382 ka Mya — about 0.1 occurrences382 ka–340 ka Mya — about 0.1 occurrences340 ka–297 ka Mya — about 0.1 occurrences297 ka–255 ka Mya — about 0.1 occurrences255 ka–212 ka Mya — about 0.1 occurrences212 ka–170 ka Mya — about 0.1 occurrences170 ka–127 ka Mya — about 0.1 occurrences127 ka–85 ka Mya — about 0.1 occurrences85 ka–42 ka Mya — about 0.1 occurrences42 ka–0 Mya — about 0.0 occurrences1.27 Mya0 Mya

1 occurrence of Hypogaleus hyugaensis 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.

Found in

1 formation

Miyata — 35.19°N, 39.65°E

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

Hypogaleus hyugaensis and its relatives

Pleistocene

Where Hypogaleus hyugaensis and its relatives were recorded in the Pleistocene.

Found in the same rock

55 taxa

The Paleobiology Database records 1 site for Hypogaleus hyugaensis, 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 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 Hypogaleus hyugaensis

Credit
CSIRO National Fish Collection
Licence
CC BY 3.0
Commercial use
the licence allows it

No 3D scan of Hypogaleus hyugaensis 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 itHypogaleus through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Miyosi 1939)