New Zealand Journal of Geology and Geophysics abstracts
A reappraisal of the systematics of the Stethothyris group of
brachiopods from the Cenozoic of New Zealand and Australia
NORTON HILLER
Canterbury Museum
Rolleston Avenue
Christchurch, New Zealand
DAVID I. MACKINNON
Department of Geological Sciences
University of Canterbury
Private Bag 4800
Christchurch, New Zealand
Abstract The systematics and affinities of species that have
previously been assigned to the terebratelloid brachiopod genus
Stethothyris Thomson, 1918, are reappraised and the taxonomic
composition of the Subfamily Stethothyridinae is re-evaluated. Only the type
species (S. uttleyi) is retained within the genus Stethothyris.
The remainder are now distributed among the new genera, Erihadrosia
(E. epsilon) from New Zealand, and Epacrothyris (E.
pectoralis, E. sufflata) from Australia, and Aliquantula
Richardson, 1991 (A. insolita, A. tapirina). One new species
(Epacrothyris rennisonae) from the Abel Head Formation, Northwest
Nelson, New Zealand, is described. All but Erihadrosia are included in
the Subfamily Stethothyridinae.
Six other related teloform loop-bearing genera, which are also assigned to the
Subfamily Stethothyridinae, are redescribed. These are Austrothyris
Allan, 1939, Cudmorella Allan, 1939, Elderra Richardson, 1991,
Pilkena Richardson, 1991, and Rhizothyris Thomson, 1915. The
Paleocene to early Eocene (Teurian-Waipawan) species Campages
chathamensis Allan, 1932 is assigned to a new genus, Tioriorithyris,
which is considered the likely basal stock from which later Stethothyridinae
evolved.
Keywords Brachiopoda; Stethothyridinae; Eocene;
Terebratellidae; Terebratelloidea; Paleocene; Oligocene; Miocene; Australia;
New Zealand; taxonomy; new taxa
New Zealand Journal of Geology & Geophysics, 2000, Vol. 43: 59-81
0028-8306/00/4301-0059 $7.00/0 (c) The Royal Society of New Zealand
2000
PDF file of entire paper: medium quality (8611K); (scanned from paper original: notes about this process)
This year's abstracts |
Journal home page |
All abstracts |
Publishing home page
