Abstract
The ostracod family Cylindroleberididae is based on the genus Cylindroleberis Brady, 1868, and has a complicated nomenclatural history. The type species of Cylindroleberis is Cypridina mariae Baird, 1850. Baird described only the carapace, which had been considered lost. Thus, there was no reference point for the concept C. mariae or the genus Cylindroleberis. Baird's material has now been found in the Natural History Museum, London, U.K., and is illustrated here. To clarify the taxonomic status of C. mariae and Cylindroleberis, specimens were obtained from near the type locality, and a supplementary description is presented. This includes description of appendages, particularly the first antenna and mandible, which contain important diagnostic characters. This supplementary description provides important information about C. mariae, allowing a revision of the genus Cylindroleberis, and establishing a framework for future biological research on this ostracod group.
Highlights
Cylindroleberidid ostracods are distinguished from other myodocopid families by their flat gills at the posterior of the body [1,2,3]
The Cylindroleberididae and Cylindroleberidinae are based on the genus Cylindroleberis Brady, 1868 [6]
Baird’s specimens were considered lost [9], the material is stored in the Natural History Museum, London, U.K
Summary
Cylindroleberidid ostracods are distinguished from other myodocopid families by their flat gills at the posterior of the body [1,2,3]. A cladistic analysis based on morphological and molecular characters suggests cylindroleberidids are a monophyletic clade within the Myodocopa [4]. The complicated taxonomic history and current species list of Cylindroleberididae was presented in Syme and Poore [5]. The Cylindroleberididae and Cylindroleberidinae are based on the genus Cylindroleberis Brady, 1868 [6]. The type species of Cylindroleberis is Cypridina mariae Baird, 1850 [7], subsequently designated by Sylvester-Bradley [8] despite the inadequacy of Baird’s description. Like many ostracod descriptions in the nineteenth century, Baird’s description was of the carapace only.
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