WoRMS source details
Jazdzewski, K.; Grabowski, M.; Kupryjanowicz, J. (2014). Further records of Amphipoda from Baltic Eocene amber with first evidence of prae-copulatory behaviour in a fossil amphipod and remarks on the taxonomic position of Palaeogammarus Zaddach, 1864. Zootaxa. 3765(5): 401-417.
191810
10.11646/zootaxa.3765.5.1 [view]
Jazdzewski, K.; Grabowski, M.; Kupryjanowicz, J.
2014
Further records of Amphipoda from Baltic Eocene amber with first evidence of prae-copulatory behaviour in a fossil amphipod and remarks on the taxonomic position of <em>Palaeogammarus</em> Zaddach, 1864
Zootaxa
3765(5): 401-417
Publication
Available for editors [request]
Two pieces of Baltic amber with amphipod inclusions were studied. One of them contained approximately twenty individuals identified as belonging to the extinct genus Palaeogammarus and described as P. debroyeri sp. nov. Interestingly, among the individuals there are two pairs preserved in an evident prae-copula position. This is the first finding of such mating behaviour in fossil amphipods. Based on this behavioural trait and on the observed morphological features, we conclude that the genus Palaeogammarus should be placed in Gammaridae and not in Crangonyctidae. The second amber piece contains two individuals identified as belonging to the still extant genus Synurella and described as S. aliciae sp. nov.
Europe
Evolution
Freshwater
Phylogeny, Phylogenesis
Systematics, Taxonomy
Freshwater
Phylogeny, Phylogenesis
Systematics, Taxonomy
Palaeogammarus Zaddach, 1864 † (status source)
Palaeogammarus debroyeri Jażdżewski, Grabowski & Kupryjanowicz, 2014 † (original description)
Synurella aliciae Jażdżewski Grabowski & Kupryjanowicz, 2014 † (status source)
Synurella aliciae Jażdżewski Grabowski & Kupryjanowicz, 2014 † (original description)
Palaeogammarus debroyeri Jażdżewski, Grabowski & Kupryjanowicz, 2014 † (original description)
Synurella aliciae Jażdżewski Grabowski & Kupryjanowicz, 2014 † (status source)
Synurella aliciae Jażdżewski Grabowski & Kupryjanowicz, 2014 † (original description)
Additional information
Recorded from Baltic amber found on the Sambia Peninsula (south-eastern shore of the Baltic Sea). [details]
Breeding
Around 20 individuals among which two pairs can be seen in prae-copulatory guarding position - possible evidence ... [details]
Fossil range
Palaeogene: Oligocene (45-50 Ma) [details]