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Report on the Taxonomy, Biogeography and Phylogeny of Mostly Living Benthic Ostracoda (Crustacea) from Deep-Sea Samples (Intermediate Water Depths) from the Challenger Plateau (Tasman Sea) and Campbell Plateau (Southern Ocean), New Zealand

MonographJournal / Magazine

Series: Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft Volume: 558

By: Kerry Michael Swanson (Author), Thomas Jellinek (Author)

329 pages, 107 plates, 9 illustrations, 2 tables

Senckenbergische Naturforschende Gesellschaft

Paperback | Jan 2003 | #201878 | ISBN: 351061352X
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NHBS Price: £74.99 $95/€88 approx

About this book

Language: English

From October 16th – November 12th 1998, a multinational group of researchers was involved in the scientific cruise no. SO 136 of the German research vessel RV `Sonne'. The voyage began in Wellington/New Zealand and ended in Hobart/Tasmania. During this cruise, from 37 stations a total of 167 samples were recovered along transsects on the Challenger and Campbell Plateaux, the Emerald Basin and the Tasman Rise.

With respect to the ostracod faunas, the epi-benthic sledge produced samples in which both diversity and specimen numbers were high. Because the opportunity to work on such a large and diverse extant deep-sea ostracod fauna is rare, the authors made the decision to work exclusively on samples which had been recovered east of the Emerald Basin [Challenger and Campbell Plateaux; the samples west of the Emerald Basin are the subject of a PhD Thesis study (Munich University)]. In total, some 150 species of about 40 genera have been discriminated.

The main objective of this study was to focus on those ostracod species for which large numbers and/or soft appendages were available. This has resulted in the discrimination of a total of 92 species from 31 genera. 42 of these species are introduced as new to science (46 % of the total number of species). Furthermore, one family, eight genera and one subgenus are introduced as new taxa. The phylogenetic and biogeographic implications of the soft anatomies and distribution of some families are also discussed in detail (Trachyleberididae and Hemicytheridae especially).


Contents

Introduction 2 

Preamble 2 

Physiography and regional setting 3 

Water masses and circulation 6 

Methods 10 

Epilogue 11 

Repository 13 

Systematics 13 

Order Podocopida G.W. MÜLLER 1894 13 

Suborder Platycopina SARS 1866 13 
Superfamily Cytherellacea SARS 1866 13 

Family Cytherellidae SARS 1866 13 

Genus Cytherella JONES 1849 13 
Genus Grammcythella n. gen. 15 
Genus Inversacytherella n. gen. 16 

Aspects of platycopine ecology 17 

The platycopine genital lobes and hemipenes 19 

Suborder Podocopina SARS 1866 20 

Superfamily Cypridacea BAIRD 1845 20 

Family Trachyleberididae SYLVESTER-BRADLEY 1948 20 

Genus Trachyleberis BRADY 1898 20 
Genus Glencoeleberis n. gen. 23 
Genus Taracythere AYRESS 1995 26 
Genus Abyssophilos n. gen. 31 
Genus Legitimocythere COLES & WHATLEY 1989 33 
Genus Henryhowella PURI 1957 38 
Genus Apatihowella n. gen. 39 
Genus Apatihowella (Apatihowella) n. gen., n. subgen. 40 
Genus Apatihowella (Fallacihowella) n. gen., n. subgen. 43 
Genus Ambocythere VAN DEN BOLD 1957 45 
Genus Clinocythereis AYRESS & SWANSON 1991 48 
Genus Philoneptunus WHATLEY, MILLSON & AYRESS 1992 49 

Problems of taxonomy and phylogeny in the Trachyleberididae 52 

Family Hemicytheridae PURI 1953 54 

Genus Bradleya HORNIBROOK 1952 54 
Bradleyine evolution and biogeography 65 

Genus Poseidonamicus BENSON 1972 69 
Genus Harleya n. gen. 71 

Family Cytheralisonidae n. fam. 72 

Genus Cytheralison HORNIBROOK 1952 73 
Genus Debissonia n. gen. 77 
Conclusions 78 

Family Uncertae sedis 79 

Genus Bisulcocythere AYRESS & SWANSON 1991 79 

Family Cytherideidae SARS 1925 79 

Genus Rotundracythere MANDELSTAM 1958 79 
Genus Pseudeucythere HARTMANN 1989 83 

Family Macrocyprididae G.W. MÜLLER 1912 83 

Genus Macroscapha MADDOCKS 1990 84 
Genus Macropyxis MADDOCKS 1990 85 
Genus Macrosarisa MADDOCKS 1990 89 
Genus Macrocyprina MADDOCKS 1990 89 

Family Bythocytheridae SARS 1926 92 

Genus Miracythere HORNIBROOK 1952 92 
Genus Bythoceratina HORNIBROOK 1952 94 

Family Xestoleberididae Sars 1928 97 

Genus Xestoleberis Sars 1866 97 
Genus Foveoleberis Malz 1980 98 

Acknowledgements 99 
References 99 
Plates 1-107 109 
Appendix 325 
Index of data for the TASQWA samples 325 
Index of genera and species used and mentioned in the text 325


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