Английская Википедия:Dromiacea

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Automatic taxobox

Dromiacea is a group of crabs, ranked as a section. It contains 240 extant and nearly 300 extinct species.[1] Dromiacea is the most basal grouping of Brachyura crabs, diverging the earliest in the evolutionary history, around the Late Triassic or Early Jurassic. Below is a cladogram showing Dromiacea's placement within Brachyura: [2] [3] Шаблон:Clade

The larvae of Dromiacea resemble those of the Anomura more closely than those of other crabs.Шаблон:Citation needed This may simply reflect their basal position in the crab phylogeny. The superfamily Eocarcinoidea, containing Eocarcinus and Platykotta, was previously considered to be a member of the Dromiacea, but has since been transferred to the Anomura.[4]

The fossil record of Dromiacea reaches back at least as far as the Jurassic,[5] and, if Imocaris is indeed a member, into the Carboniferous.[6]

Dromiacea primarily consists of two groups of superfamilies - Dromioidea and Homoloidea. See the below cladogram:[2] Шаблон:Clade

Recent studies have found that some of the families may not be monophyletic, but rather paraphyletic.[2]

References

Шаблон:Reflist

Шаблон:Brachyura Шаблон:Taxonbar