Galatheacaris
| Galatheacaris | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Subphylum: | |
| Class: | |
| Order: | |
| Infraorder: | |
| Superfamily: |
Galatheacaridoidea
Vereshchaka, 1997
|
| Family: |
Galatheacarididae
Vereshchaka, 1997
|
| Genus: |
Galatheacaris
Vereshchaka, 1997
|
| Species: |
G. abyssalis
|
| Binomial name | |
| Galatheacaris abyssalis Vereshchaka, 1997
|
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Galatheacaris abyssalis is a rare species of shrimp, now thought to be a larval stage of another genus, Eugonatonotus.
It was described in 1997 on the basis of a single specimen caught in the Celebes Sea at a depth of 5,000 metres (16,000 ft). It was seen to be so different from previously known shrimp species that a new family, Galatheacarididae, and superfamily, Galatheacaridoidea, were erected for it.[1] Later, more specimens were found in the stomach of a lancetfish, Alepisaurus ferox.[2]
The species shares some plesiomorphies with Procaris, and the two taxa were thought to be closely related.[3] Molecular phylogenetic analyses showed that Galatheacaris abyssalis had such similar mitochondrial DNA to that of Eugonatonotus chacei that the two must be considered conspecific; it is now thought that Galatheacaris is the megalopa stage of Eugonatonotus.[4]
