Leptodorosida, Kotov, 2007

Kotov, Alexey A., 2007, Jurassic Cladocera (Crustacea, Branchiopoda) with a description of an extinct Mesozoic order, Journal of Natural History 41 (1 - 4), pp. 13-37 : 16-17

publication ID

https://doi.org/ 10.1080/00222930601164445

persistent identifier

https://treatment.plazi.org/id/03B68794-3166-FF99-FE20-FAEFB3F888E2

treatment provided by

Carolina

scientific name

Leptodorosida
status

gen. nov.

Leptodorosida gen. nov.

Type species. Leptodorosida zherikhini sp. nov.

Etymology

Leptodora Lilljeborg, 1861 is the type (single) genus of the family Leptodoridae Lilljeborg, 1861 of the gymnomeran order Haplopoda ; Sida Straus, 1820 is the type genus of the family Sididae, Baird 1850 of the ‘‘calyptomeran’’ order Ctenopoda . Among all cladocerans, AII of Leptodorosida gen. nov. is maximally similar with one of Leptodora , while general body shape is similar with sidids.

Diagnosis

Body elongated with expressed postero-dorsal angle. Distal extremity of head protruding anteriorly, posterior portion of head inflated. AII with proximal segment of endopod long and proximal segment of exopod of moderate length, second segment of exopod shorter than 3 + 4 segments. Each of segments 3–4 of endopod with a series of setae.

Differential diagnosis

Leptodorosida gen. nov. differs from the second known genus from the order Cryptopoda ord. nov., Leposida gen. nov., in elongated body and large proximal segments of antennal branches.

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