Caeruleum

Caeruleum is an extinct genus of lamprey from the Lower Cretaceous Jiufotang Formation of China. The genus contains two species, C. miraculum and C. gracilis, known from various specimens including complete and partial bodies.

No picture of Caeruleum was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Caeruleum, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PetromyzontiformesPBDB
Motility
actively mobilePBDB, for Chordata

Time the record covers

At most 43 million years on record.

Every occurrence read is dated to somewhere between 143.1 Mya and 100.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Jurassic — about 0 of 2 occurrencesEarly Cretaceous — about 2 of 2 occurrencesEarly CretaceousLate Cretaceous — about 0 of 2 occurrences144–142 Mya — about 0.0 occurrences142–141 Mya — about 0.1 occurrences141–140 Mya — about 0.1 occurrences140–138 Mya — about 0.1 occurrences138–137 Mya — about 0.1 occurrences137–135 Mya — about 0.1 occurrences135–134 Mya — about 0.1 occurrences134–132 Mya — about 0.1 occurrences132–131 Mya — about 0.1 occurrences131–129 Mya — about 0.1 occurrences129–128 Mya — about 0.1 occurrences128–126 Mya — about 0.1 occurrences126–125 Mya — about 0.1 occurrences125–123 Mya — about 0.1 occurrences123–122 Mya — about 0.1 occurrences122–120 Mya — about 0.1 occurrences120–119 Mya — about 0.1 occurrences119–117 Mya — about 0.1 occurrences117–116 Mya — about 0.1 occurrences116–114 Mya — about 0.1 occurrences114–113 Mya — about 0.1 occurrences113–111 Mya — about 0.1 occurrences111–110 Mya — about 0.1 occurrences110–109 Mya — about 0.1 occurrences109–107 Mya — about 0.1 occurrences107–106 Mya — about 0.1 occurrences106–104 Mya — about 0.1 occurrences104–103 Mya — about 0.1 occurrences103–101 Mya — about 0.1 occurrences101–100 Mya — about 0.0 occurrences144 Mya99.6 Mya

2 occurrences of Caeruleum 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

2 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

Jiufotang — 42.20°N, 117.94°E

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

Caeruleum and its relatives

Early Cretaceous

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

Found in the same rock

No other named taxon is catalogued from that site.

The Paleobiology Database records 1 site for Caeruleum, and this reads all of them.

Entered from

2 references

Each of the 2 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. 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

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

No picture of Caeruleum was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Caeruleum, or no answer at all. This entry cannot say which.

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 itPetromyzontiformes through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Huang et al. 2024