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Family HALOCYPRIDIDAE Dana, 1853

Introduction

A discussion on the origin of Halocyprididae is presented in Kornicker et al. (2010), including the possibility that the family evolved from cave-dwelling ancestors.

 

Diagnosis

Valves very weakly calcified, usually elongate, rather rectangular, some rather ovate; anterior margin usually with conspicuous rostrum and incisure or at least a slight indentation; dorsal margin often quite straight, posterodorsal corner often with acute or spine-like glandular process; posterior and anteroventral margins convex. Non-radial muscle scar pattern. Antennula with 3–8 articulated segments, usually bent downwards distally, occasionally also bent between first and second segments; first segment without setae; some with distal filament pad. Antennal endopod with 2 (female) or 3 (male) segments. Sixth limb sometimes sexually dimorphic, short with a terminal claw in female, long with flexible terminal setae in male; exopod reduced or represented only by one seta. Male copulatory appendage with 1–2 parts. Furca with all claws articulated at base. Bellonci organ bifurcate or not, sometimes absent.

 

History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
28-Mar-2012 28-Mar-2012 MODIFIED
30-Mar-2010 MODIFIED