Hemigaleidae

CSIRO National Fish Collection · CC BY 3.0 · via Wikidata/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
- CarcharhiniformesPBDB
- Diet
- carnivorePBDB, for Carcharhiniformes
- Life habit
- nektonicPBDB, for Carcharhiniformes
- Motility
- actively mobilePBDB, for Carcharhiniformes
Time the record covers
At least 201 million years on record.
The record covers at least 201.4 Mya to 129 ka. No occurrence read is dated outside 205.7 Mya to 11.7 ka.
389 occurrences of Hemigaleidae on record, most of them in the Miocene. 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
389 occurrences- Late Triassicunder 1%
- Eocene19%
- Oligocene4%
- Miocene70%
- Pliocene5%
- Pleistocene1%
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
131 formations
- Calvert Formation · Chesapeake Group16
- Gehannam Formation14
- Birket Qarun Formation12
- Lagos-Portimão Formation12
- Gatun Formation11
- Pirabas Formation11
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The named rock units Hemigaleidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 107 further formations hold fewer occurrences each and are not listed. 86 occurrences have no formation on record, which is common for older literature.
Hemigaleidae and its relatives
MioceneWhere Hemigaleidae and its relatives were recorded in the Miocene.
Found in the same rock
3,191 taxa- Hemipristis serra181 sites
- Carcharhinus101 sites
- Otodus megalodon97 sites
- Galeocerdo aduncus78 sites
- Carcharodon hastalis72 sites
- Myliobatis69 sites
- Rhinoptera53 sites
- Dasyatis49 sites
- Isurus oxyrinchus43 sites
- Carcharhinus priscus40 sites
- Rhizoprionodon39 sites
- Carcharias cuspidatus36 sites
- Aetobatus35 sites
- Physogaleus contortus35 sites
- Carcharias taurus33 sites
- Negaprion brevirostris33 sites
- Sphyrna31 sites
- Squatina31 sites
- Negaprion eurybathrodon30 sites
- Sphyrna zygaena30 sites
- Squalus29 sites
- Galeocerdo28 sites
- Notorynchus primigenius28 sites
- Galeocerdo cuvier27 sites
The Paleobiology Database records 280 sites for Hemigaleidae, and this reads 240 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
173 references- Shark and ray faunas in the Middle and Late Eocene of the Fayum Area, Egypt25
- Les chondrichthyens du Miocène moyen (Serravallien) de Salles (Gironde, France)18
- Inventaire des Élasmobranches (requins, raies, chimères) des dépôts molassiques du Sud-Luberon (Miocène supérieur)15
- Vertébrés (crocodiliens, poissons) du Miocène marin de l'Argarve occidentale12
- Sharks and Rays (Chondrichthyes, Elasmobranchii) from the late Miocene Gatun Formation of Panama10
- USNM Chesapeake Group Cetacean Collection Data10
- Sharks and rays from the Mokattamian Stage (middle and late Eocene) of Egypt, including some species from the middle Eocene Midra Shale of Qatar9
- Sawfishes and other elasmobranch assemblages from the Mio-Pliocene of the south Caribbean (Urumaco sequence, northwestern Venezuela)9
- Late Miocene chondrichthyans from Lago Bayano, Panama: Functional diversity, environment and biogeography8
- Carcharocles megalodon unpublished collections from Natural History Museums around the world8
- Neogene sharks and rays from the Brazilian 'Blue Amazon'6
- The Neogene sharks, rays, and bony fishes from Lee Creek Mine, Aurora, North Carolina6
Each of the 389 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. 161 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 Hemigaleidae
- Source
- Wikidata/Commons
- Credit
- CSIRO National Fish Collection
- Licence
- CC BY 3.0
- Commercial use
- the licence allows it
No 3D scan of Hemigaleidae 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCarcharhiniformes through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hasse 1879