Dromiacea Temporal range:
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Dromia dormia ( Dromioidea: Dromiidae) feeding on a sea urchin | |
Scientific classification
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Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Malacostraca |
Order: | Decapoda |
Suborder: | Pleocyemata |
Infraorder: | Brachyura |
Section: |
Dromiacea De Haan, 1833 |
Superfamilies | |
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]
The larvae of Dromiacea resemble those of the Anomura more closely than those of other crabs.[ 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]
Dromiacea |
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Recent studies have found that some of the families may not be monophyletic, but rather paraphyletic. [2]
Dromiacea Temporal range:
| |
---|---|
![]() | |
Dromia dormia ( Dromioidea: Dromiidae) feeding on a sea urchin | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Malacostraca |
Order: | Decapoda |
Suborder: | Pleocyemata |
Infraorder: | Brachyura |
Section: |
Dromiacea De Haan, 1833 |
Superfamilies | |
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]
The larvae of Dromiacea resemble those of the Anomura more closely than those of other crabs.[ 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]
Dromiacea |
| ||||||||||||||||||
Recent studies have found that some of the families may not be monophyletic, but rather paraphyletic. [2]