Heteroconger
Heteroconger is a genus of marine congrid eels. These small, slender garden eels live in groups where each individual has its own burrow. Usually, only the head and front half of the body is visible. The greatest species richness is in the Indo-Pacific, but species are also found in the warmer parts of the Atlantic and the eastern Pacific. The genus name relates to the species' distinct appearance, particularly in dentition, from other closely related eels.

Cody Logan · 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- Also called
- garden eelPBDB
- Sits inside
- CongridaePBDB
- Diet
- carnivorePBDB, for Anguilliformes
- Life habit
- nektobenthicPBDB, for Anguilliformes
- Motility
- actively mobilePBDB, for Anguilliformes
Time the record covers
At least 28 million years on record.
The record covers at least 56 Mya to 27.3 Mya. No occurrence read is dated outside 61.66 Mya to 25.2 Mya.
3 occurrences of Heteroconger on record. 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
3 occurrencesThese 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
2 formations
- Tashlik Formation · Luzanovka Group1
- Piney Point Formation · Claiborne Group1
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The named rock units Heteroconger has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Found in the same rock
73 taxa- Allomorone burlesonis1 site
- Antennariidae1 site
- Antigonia1 site
- Arius danicus1 site
- Arius subtilis1 site
- Arnoglossus lautus1 site
- Arnoglossus longus1 site
- Astroscopus1 site
- Bauzaia1 site
- Bembrops aequiformis1 site
- Blennius1 site
- Brachypleura nana1 site
- Brazosiella kokeni1 site
- Bythitidarum1 site
- Caproidarum serratus1 site
- Centroberyx1 site
- Centroberyx anguinicauda1 site
- Centroberyx fragilis1 site
- Centroberyx integer1 site
- Chlorophthalmus udovichenkoi1 site
- Conger1 site
- Epigonidarum1 site
- Eurypleuron debilis1 site
- Fierasferoides bucculentus1 site
The Paleobiology Database records 3 sites for Heteroconger, 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
3 references- Middle and late Eocene fish otoliths from the eastern and southern USA1
- Otoliths reveal diverse fish communities in Late Oligocene estuarine to deep-water paleoenvironments in southern Zealandia1
- The otoliths from the middle Paleocene of Luzanivka (Cherkasy district, Ukraine)1
Each of the 3 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 content2
Picture of Heteroconger
- Source
- Wikipedia/Commons
- Credit
- Cody Logan
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Heteroconger longissimus · tcwc:ichthyology:615.06
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 itCongridae through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Bleeker 1868