Palaeos		Malacostraca
Arthropoda		Eucarida

Malacostraca: Eucarida

CRUSTACEA
|
`--MALACOSTRACA
        |--Phyllocarida
        `--+--Hoplocarida
           `--Eumalacostraca
              |--Syncarida
              |--Peracarida
              `--Eucarida
                 |--Euphausiacea
                 |--Amphionidacea
                 `--DECAPODA

Taxa on This Page

1. Eucarida
2. Euphausiacea
3. Amphionidacea

Descriptions

Eucarida

Range: From the Triassic

Phylogeny: Eumalacostraca : Syncarida + Peracarida + * : Euphausiacea + Amphionidacea + Decapoda

Characters: the carapace covers the cephalothorax and the eyes are stalked. - Twenhofel & Shrock 1935

Euphausiacea

Range: No fossil record

Phylogeny: Eucarida : Amphionidacea + Decapoda + *

Characters: Caridoid (shrimp-like) forms in which none of the thoracic appendages are specialised as maxillipeds and the gills are in a single series attached to the bases of the thoracic limbs.- Zittel & Eastman 1913

Amphionidacea

Range: No fossil record

Phylogeny: Eucarida : Euphausiacea + Decapoda + *

Comments: Amphionides reynaudii is the sole representative of the order Amphionidacea, and is a small (less than one inch long) planktonic crustacean found throughout the world's tropical oceans, the larvae mostly in shallow waters, and the adults at greater depth. - Wkipedia

Illustration: Wkipedia