Geodiversitas
24 (1) - Pages 61-76A new genus of limnic ostracode, Septacandona n. gen., belonging to the family Candonidae Kaufmann, 1900, subfamily Candoninae, as well as four new species, Septacandona azeredae n. gen., n. sp., Septacandona ramalhoi n. gen., n. sp., Septacandona multicostulata n. gen., n. sp., and Candona? parvissima n. sp. are described from the Oxfordian of Portugal. The genus Septacandona n. gen., ranging from Bajocian to the uppermost Cretaceous, differs from the other members of the family Candonidae in the presence of an internal vertical crest located ahead of the muscle scars. Ecological tolerance of the various species has evolved from euryhaline in the Bajocian to oligohaline and freshwater since the Oxfordian.
Crustacea, Ostracoda, Oxfordian, Upper Jurassic, Portugal, limnic environment, palaeoecology, new genus, new species