Halimeda

Halimeda is a genus of green macroalgae. The algal body (thallus) is composed of calcified green segments. Calcium carbonate is deposited in its tissues, making it inedible to most herbivores. However one species, Halimeda tuna, was described as pleasant to eat with oil, vinegar, and salt.

Halimeda

Alberto Romeo albertoromeo@neomedia.it http://www.romeofotosub.it · 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
Sits inside
HalimedaceaePBDB
Diet
"photoautotroph"PBDB, for Halimedaceae
Life habit
epifaunalPBDB, for Halimedaceae
Motility
stationaryPBDB, for Halimedaceae
Environment
hypersaline,marine,brackishPBDB, for Halimedaceae

Time the record covers

At least 201 million years on record.

The record covers at least 201.4 Mya to 11.7 ka. No occurrence read is dated outside 227.3 Mya to 0 Mya.

Late Triassic — about 4 of 279 occurrencesLate TriassicEarly Jurassic — about 0 of 279 occurrencesMiddle Jurassic — about 0 of 279 occurrencesLate Jurassic — about 2 of 279 occurrencesEarly Cretaceous — about 9 of 279 occurrencesEarly CretaceousLate Cretaceous — about 15 of 279 occurrencesLate CretaceousPaleocene — about 34 of 279 occurrencesEocene — about 69 of 279 occurrencesEoceneOligocene — about 1 of 279 occurrencesMiocene — about 47 of 279 occurrencesPliocene — about 3 of 279 occurrencesPleistocene — about 65 of 279 occurrences232–224 Mya — about 0.2 occurrences224–216 Mya — about 0.6 occurrences216–209 Mya — about 0.6 occurrences209–201 Mya — about 3 occurrences162–155 Mya — about 0.0 occurrences155–147 Mya — about 2 occurrences131–124 Mya — about 2 occurrences124–116 Mya — about 4 occurrences116–108 Mya — about 0.8 occurrences108–100 Mya — about 3 occurrences100–93 Mya — about 7 occurrences93–85 Mya — about 3 occurrences85–77 Mya — about 2 occurrences77–70 Mya — about 2 occurrences70–62 Mya — about 11 occurrences62–54 Mya — about 36 occurrences54–46 Mya — about 38 occurrences46–39 Mya — about 12 occurrences39–31 Mya — about 7 occurrences31–23 Mya — about 0.5 occurrences23–15 Mya — about 8 occurrences15–7.7 Mya — about 22 occurrences7.7–0 Mya — about 115 occurrences201.4 Mya11.7 ka232 Mya0 Mya

279 occurrences of Halimeda on record, most of them in the Eocene. 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

279 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

47 formations

Sylhet Formation — 25.26°N, 91.72°ELakadong — 25.19°N, 91.76°EJafnayn — 22.68°N, 59.37°EAmapa — 3.32°N, 49.66°WAldabra Limestone — 9.42°S, 46.45°EHuy Bay — 10.59°N, 92.56°EMut — 36.83°N, 33.47°ELakadong Limestone — 25.19°N, 91.76°ESylhet Limestone — 22.31°N, 88.28°ESylhet Limestone — 22.59°N, 88.01°ESylhet Limestone — 23.10°N, 88.55°ESylhet Limestone — 22.21°N, 88.17°ESylhet Limestone — 22.90°N, 88.50°EZongpu — 28.29°N, 88.59°EZongpu — 28.30°N, 88.66°EZongpu — 28.30°N, 88.51°EZhepure Shan — 28.65°N, 87.16°ETaft — 31.62°N, 53.81°EPrang — 25.18°N, 91.77°ESanto Spirito — 42.17°N, 14.17°ENovaglie — 39.87°N, 18.38°ENovaglie — 39.78°N, 18.37°EUpper Coralline Limestone — 35.95°N, 14.35°EUpper Coralline Limestone — 35.92°N, 14.37°EFalmouth — 18.50°N, 77.33°WTakamaka Limestone — 9.42°S, 46.45°EDaito — 25.45°N, 131.17°ELindos Acropolis — 35.92°N, 27.83°EAmbergris Cay Limestone — 18.12°N, 87.82°WAmbergris Cay Limestone — 18.00°N, 87.90°WLameta — 21.37°N, 77.55°EHalal — 30.80°N, 33.45°EHalal — 30.37°N, 33.52°ENago Limestone — 45.89°N, 10.88°E

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The named rock units Halimeda has been recovered from, largest first. Drawn where the rock is now, not where it formed. 23 further formations hold fewer occurrences each and are not listed. 142 occurrences have no formation on record, which is common for older literature.

Halimeda and its relatives

Eocene

Where Halimeda and its relatives were recorded in the Eocene.

Found in the same rock

707 taxa

The Paleobiology Database records 160 sites for Halimeda, 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

114 references

Each of the 279 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. 102 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 content2

Picture of Halimeda

Credit
Alberto Romeo albertoromeo@neomedia.it http://www.romeofotosub.it
Licence
CC BY 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

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 itHalimedaceae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lamouroux 1812