Hamites

Hamites is a genus of heteromorph ammonite that evolved late in the Aptian stage of the Early Cretaceous and lasted into the Cenomanian stage of the Late Cretaceous. The genus is almost certainly paraphyletic but remains in wide use as a "catch all" for heteromorph ammonites of the superfamily Turrilitoidea that do not neatly fit into the more derived groupings. In an attempt to identify clades within the genus, it has been divided up into a series of new genera or subgenera by different palaeontologists, including Eohamites, Hamitella, Helicohamites, Lytohamites, Planohamites, Psilohamites, and Sziveshamites.

Hamites

Jonathan Chen · CC BY 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
HamitidaePBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Ammonoidea
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At least 49 million years on record.

The record covers at least 121.4 Mya to 72.2 Mya. No occurrence read is dated outside 125.77 Mya to 66 Mya.

Early Cretaceous — about 116 of 164 occurrencesEarly CretaceousLate Cretaceous — about 48 of 164 occurrencesLate CretaceousPaleocene — about 0 of 164 occurrences127–125 Mya — about 0.2 occurrences125–123 Mya — about 0.5 occurrences123–121 Mya — about 0.4 occurrences121–119 Mya — about 1.0 occurrences119–117 Mya — about 2 occurrences117–115 Mya — about 2 occurrences115–112 Mya — about 10 occurrences112–110 Mya — about 25 occurrences110–108 Mya — about 7 occurrences108–106 Mya — about 5 occurrences106–104 Mya — about 23 occurrences104–102 Mya — about 23 occurrences102–100 Mya — about 20 occurrences100–98 Mya — about 10 occurrences98–96 Mya — about 10 occurrences96–94 Mya — about 10 occurrences94–92 Mya — about 1 occurrence92–90 Mya — about 1.0 occurrences90–88 Mya — about 0.3 occurrences88–86 Mya — about 0.8 occurrences86–83 Mya — about 5 occurrences83–81 Mya — about 0.2 occurrences81–79 Mya — about 0.2 occurrences79–77 Mya — about 0.2 occurrences77–75 Mya — about 0.2 occurrences75–73 Mya — about 0.2 occurrences73–71 Mya — about 1 occurrence71–69 Mya — about 2 occurrences69–67 Mya — about 2 occurrences67–65 Mya — about 0.8 occurrences121.4 Mya72.2 Mya127 Mya65 Mya

164 occurrences of Hamites 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

164 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

44 formations

Hilo — 3.67°N, 74.89°WGrès verts helvétiques — 45.99°N, 6.71°EGrès verts helvétiques — 45.91°N, 6.49°EGrès verts helvétiques — 46.04°N, 6.62°EGrès verts helvétiques — 46.13°N, 6.80°EGrès verts helvétiques — 45.98°N, 6.78°EMarnes bleues — 44.33°N, 5.17°EFolkestone — 51.08°N, 1.18°EFolkestone — 51.32°N, 0.32°EFolkestone — 51.22°N, 0.82°WPrairie Bluff — 33.79°N, 88.97°WPrairie Bluff — 33.38°N, 88.74°WPrairie Bluff — 33.07°N, 88.61°WPrairie Bluff — 32.57°N, 88.19°WInca — 7.45°S, 78.18°WBrochterbeck — 52.22°N, 7.75°EBelle Fourche — 45.05°N, 104.45°WBelle Fourche — 44.06°N, 104.63°WBelle Fourche — 44.28°N, 104.78°WCatumbela — 12.45°S, 13.57°ECatumbela — 12.35°S, 13.58°EMancos Shale — 35.96°N, 110.89°WCouches du Freu — 46.01°N, 6.35°ECouches du Freu — 46.88°N, 6.26°ECalcaires de Fiz — 45.98°N, 6.79°ECalcaires de Fiz — 46.10°N, 6.78°EMzinene — 27.90°S, 32.32°EMzinene — 26.92°S, 32.25°EWangarlu Mudstone — 12.38°S, 130.60°EWangarlu Mudstone — 12.25°S, 131.03°EGreenhorn Limestone — 44.73°N, 103.73°WGreenhorn Limestone — 38.28°N, 104.72°WGarschella — 47.33°N, 9.54°EWest Melbury Marly Chalk — 50.59°N, 1.24°WTodai — 35.79°N, 138.13°EGarschella — 47.35°N, 9.74°EEutaw — 32.72°N, 87.80°WEutaw — 32.77°N, 87.87°WBaddeckenstedt — 52.28°N, 7.45°ECorsicana Marl — 29.60°N, 98.03°WWoodbine — 33.66°N, 96.91°WPochote — 19.43°N, 99.13°W

Loading coastlines…

The named rock units Hamites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 20 further formations hold fewer occurrences each and are not listed. 44 occurrences have no formation on record, which is common for older literature.

Hamites and its relatives

Early Cretaceous

Where Hamites and its relatives were recorded in the Early Cretaceous.

Found in the same rock

1,005 taxa

The Paleobiology Database records 130 sites for Hamites, 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

61 references

Each of the 164 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. 49 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 Hamites

Credit
Jonathan Chen
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itHamitidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Parkinson 1811)