Isurus desori
Isurus desori, commonly known as the Desori mako shark or Desori shark, is an extinct species of mako shark, that lived in the Early Oligocene and Middle Miocene, between 32.5 and 12.1 million years ago. It measured 4.2 m (14 ft) long.

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
- IsurusPBDB
- Diet
- carnivorePBDB, for Lamniformes
- Life habit
- nektonicPBDB, for Lamniformes
- Motility
- actively mobilePBDB, for Lamniformes
Time the record covers
At least 66 million years on record.
The record covers at least 72.2 Mya to 5.333 Mya. No occurrence read is dated outside 83.6 Mya to 0 Mya.
47 occurrences of Isurus desori on record, most of them in the Miocene. 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
47 occurrences- Late Cretaceous2%
- Paleoceneunder 1%
- Eoceneunder 1%
- Oligocene22%
- Miocene73%
- Pliocene2%
- Pleistoceneunder 1%
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
29 formations
- Esbarrondadoiro Formation3
- Jan Juc Formation2
- Berchem Formation2
- Filakovo Formation1
- Port Campbell Limestone Formation1
- Clifton Formation1
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The named rock units Isurus desori has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 further formations hold fewer occurrences each and are not listed. 14 occurrences have no formation on record, which is common for older literature.
Isurus desori and its relatives
MioceneWhere Isurus desori and its relatives were recorded in the Miocene.
Found in the same rock
451 taxa- Carcharodon hastalis26 sites
- Otodus megalodon21 sites
- Galeocerdo aduncus18 sites
- Carcharhinus priscus15 sites
- Carcharias cuspidatus15 sites
- Notorynchus primigenius15 sites
- Carcharhinus14 sites
- Dasyatis14 sites
- Hemipristis serra14 sites
- Squalus12 sites
- Squatina12 sites
- Myliobatis11 sites
- Rhinoptera11 sites
- Carcharias acutissimus9 sites
- Cosmopolitodus planus9 sites
- Isurus retroflexus9 sites
- Parotodus benedeni9 sites
- Sphyrna9 sites
- Carcharias acutissima8 sites
- Hexanchus8 sites
- Otodus (Carcharocles) angustidens8 sites
- Squatina subserrata8 sites
- Carcharias7 sites
- Carcharias taurus7 sites
The Paleobiology Database records 46 sites for Isurus desori, 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
27 references- A review of the Tertiary fossil Cetacea (Mammalia) localities in Australia6
- Late Mesozoic and Cenozoic fish faunas of Japan5
- Late Cenozoic elasmobranchs from the Hokuriku district, central Japan5
- Revision of Neogene Mackerel Shark of Genus Isurus from Japan4
- Inventaire des Élasmobranches (requins, raies, chimères) des dépôts molassiques du Sud-Luberon (Miocène supérieur)2
- Sélaciens du Miocène terminal du bassin d'Alvalade (Portugal) Essai de synthèse2
- A little known odontaspid shark from the Antwerp Sands Member (Miocene, Hemmoorian) and some stratigraphical remarks on the shark-teeth of the Berchem Formation (Miocene, Hemmoorian) at Antwerp (Belgium)2
- Descriptions and Revisions of the Cretaceous and Tertiary Fish-remains of New Zealand2
- Le site paléontologique du Grand Morier (Pont-Boutard, Indre-et-Loire, France): contexte géologique et détail biostratigraphique des formations cénozoïques à partir des assemblages de vertébrés fossiles1
- Carcharocles megalodon unpublished collections from Natural History Museums around the world1
- Los tiburones Lamniformes (Chondrichthyes, Galeomorphii) del Plioceno inferior de la Formación Arenas de Huelva, suroeste de la cuenca del Guadalquivir, España1
- Ictiofauna de la localidad de San Gerardo de Limoncito, Formación Curré, Mioceno Superior, Cantón de Coto Brus, provincia de Puntarenas, Costa Rica1
Each of the 47 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. 15 further references are not listed. 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 Isurus desori
- Source
- Wikipedia/Commons
- Credit
- Ghedoghedo
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Isurus desori 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 itIsurus through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Sismonda 1849)