23 research outputs found
Classification of New Zealand Arionacea (Mollusca : pulmonata). A revision of some endodontid genera (Endodontidae Pilsbry, 1894).
The following systematic revisions of New Zealand
taxa within the Arionacean subfamilies Flammulininae Climo, 1969,
Otoconchinae Cockerell, 1893 and Endodontinae Suter, 1913
(family Endodontidae Pilsbry, 1894) are based on quantitative
reappraisals of shell morphology and studies on radular and
soft-part morphology.
The last major revision of these New Zealand pulmonate
taxa was presented by Suter (1 913) i n his Manual of the New Zealand
Mollusca, and illustrated in his Atlas of Plates which appeared in
1915. Suter’s work was, as were the great majority of earlier
pulmonate systematic studies, based on studies of shell and radular
morphology, and was the major contribution towards the erection
of a systematic hierarchy which illustrated the indigenous nature
of the New Zealand endodontid fauna. Systematic studies on
Australian and New Zealand endodontids by the contemporary
worker T. Iredale resulted in the replacement of Suter1s hierarchy
which was influenced by the earlier works of H. A. Pilsbry.
Iredale’s higher classification of the New Zealand endodontid
fauna has been followed in Australia and New Zealand to the present
day, but not without question. The introductory paper in the series which comprises this thesis elaborates on, and shows that the doubts held about the Iredalian higher systematics can be
substantiated.
I was influenced by statements made by Solem (1959) to undertake an anatomical study of the New Zealand representatives of the family Endodontidae Pilsbry, 1894. Solem and other workers
have mentioned that the distinction between Charopidae Iredale,
1937 and Flammulinidae Iredale, 1937 was artificial. Solem also
stated that to understand the generic relationships within the large,
diverse group of molluscs which he classified in the redefined
subfamily Endodontinae Suter, 1913 (Charopidae and Flammulinidae),
anatomical studies would have to be undertaken.
Having shown that the distinction between Charopidae and
Flammulinidae was artificial (Part I), I then proceeded to systematically dissect all available New Zealand species within the redefined
subfamily Endodontinae. The results of these dissections have
provided information which enables the Endodontinae to be divided
into two taxa: the subfamilies Endodontinae and Flarnmulininae
Climo. Having established this higher systematic platform I then
revised the existing taxa in light of the new anatomical data and
information provided by studies in shell variation. The revisions
as here presented are part of a long term study which will eventually result in a review of the entire New Zealand endodontid fauna.
Lack of material and the time necessary to revise some genera
in the Flammulininae, and the large punctid complex (Punctinae
Morse, 1864) has made it impracticable to include a revision of
these taxa in this thesis
Влияние палеоклимата на геотермический режим и нефтегенерационный потенциал баженовской свиты (на широтах Томской области)
Проведено многовариантное палеотемпературное моделирование осадочных разрезов шести глубоких скважин Томской области. Определено существенное влияние векового хода температур на поверхности Земли (палеоклимат) на термическую историю и реализацию нефтегенерационного потенциала отложениями баженовской свиты для различных тектонических структур, расположенных на разных широтах Томской области. В качестве критериев адекватности модели геотермического режима приняты "реперные" геотемпературы из отражательной способности витринита и нефтегазоносность верхнеюрских отложений