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Graptolite evidence for the ages of the Sofala Volcanics and Willow Glen Formation, northern capertee high, N.S.W. 索法拉火山和威洛格伦组时代的笔石证据,北卡波提高,新西南
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619201
R. B. Rickards, A. Wright, J. Pemberton
New finds of graptolites in the Cudgegong district, N.S.W., indicate a Bo3 (mid-Bolindian: Late Ordovician) age for the upper part of the Sofala Volcanics and an early Pridoli (Late Silurian) age for the upper part of the Willow Glen Formation. The Silurian graptolite is described as Monograptus parultimus minutus subsp. nov. Integration of the new biostratigraphic data with SHRIMP ages for volcanic units in the Cudgegong sequence supports an age of 410 Ma for the Silurian-Devonian boundary.
新南西Cudgegong地区新发现的笔石表明,索法拉火山上部为Bo3(中bolindian:晚奥陶世)时代,Willow Glen组上部为早Pridoli(晚志留世)时代。志留纪笔石被描述为Monograptus parultimus minutus subsp。11 .将新的生物地层资料与Cudgegong层序中火山单元的SHRIMP年龄相结合,支持志留纪-泥盆纪界线的年龄为410 Ma。
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引用次数: 8
Palaelodus (Aves: Palaelodidae) from the Middle to Late Cainozoic of Australia 产于澳大利亚中新代中晚期的一种古菖蒲科植物
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619196
R. Baird, P. Vickers-Rich
Skeletal elements of the extinct family Palaelodidae have only been recorded from Australia since 1982. We describe Palaelodus pledgei n. sp. and P. wilsoni n. sp., two new species of palaelodid from Cooper Creek, and Lakes Palankarinna, Pinpa and Yanda in northern South Australia. The material differs from European species in both mensural and morphological characters and constitutes the smallest and the largest species in the genus. These species clearly belong in the genus Palaelodus, rather than Megapaloelodus, based upon the gracile nature of the elements. Palaelodus wilsoni extends the chronological range of the family to the Middle Pleistocene. Owing to differences in the European and Australian species the material is considered to be of little use in intercontinental correlation. Palaeoenvironmental factors responsible for the extinction of the Palaelodidae in Australia may be similar to those speculated for the Phoenicopteridae, namely the loss of lake full levels at the end of the Pleistocene, ...
早在1982年,已经灭绝的古猿科的骨骼成分才在澳大利亚被记录下来。本文报道了南澳北部库帕克里克和Palankarinna湖、Pinpa湖和Yanda湖的Palaelodus pledgei n. sp和p.w ilsoni n. sp这两个古elodid新种。该材料在测量和形态特征上与欧洲物种不同,构成了该属中最小和最大的物种。这些物种显然属于古菖蒲属,而不是巨菖蒲属,基于其元素的柔软性。古odus wilsoni将这个家族的年代范围扩展到了中更新世。由于欧洲和澳大利亚物种的差异,这种材料被认为在洲际对比中用处不大。导致澳大利亚古猿科灭绝的古环境因素可能与推测的凤凰科灭绝的古环境因素相似,即更新世末期湖泊满水位的丧失,……
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引用次数: 19
Lower Devonian microvertebrates from the Point Hibbs Formation, Tasmania 塔斯马尼亚海布斯角组泥盆纪下的微型脊椎动物
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619236
C. Burrow, J. Long, S. Turner
Palaeozoic microvertebrate remains are documented from the Point Hibbs Formation, Point Hibbs, western Tasmania. They comprise scales, teeth and ornamented dermal bone from acanthodians “Nostolepis” guangxiensis, Nostolepis spp., Gomphonchus? bogongensis, Trundlelepis cervicostulata and Watsonacanthus? sp., onychodontiform sarcopterygians, and four types of placoderms. The microvertebrate fauna supports a Lower Devonian (Pragian) age for the deposit, when compared with other eastern Australian occurrences of these taxa.
古生代微脊椎动物的遗骸被记录在塔斯马尼亚西部的希布斯角的希布斯角地层。它们包括鳞片、牙齿和有纹饰的真皮骨,分别来自广西棘棘猴(Nostolepis)、Nostolepis spp.、Gomphonchus?bogongensis, Trundlelepis颈椎和Watsonacanthus?甲齿形肉仿动物和四种平皮动物。与其他澳大利亚东部发现的这些分类群相比,这些微脊椎动物动物群支持该沉积物的下泥盆纪(Pragian)时代。
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引用次数: 8
Early Cretaceous fern foliage from President Head, Snow Island, Antarctica 早白垩世的蕨类植物叶子,来自南极洲雪岛的总统头
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619203
D. Cantrill
Fertile fern foliage described as Lophosoria cupulatus sp. nov. contains the distinctive spore Cyatheacidites annulatus. The fossil foliage is morphologically similar to the Early Cretaceous form-genera Gleichenites and Microphyllopteris, whose time and space distribution in Gondwana matches that of the dispersed spore Cyatheacidites. Some of the Cretaceous southern hemisphere material assigned to Gleichenites and Microphyllopteris is probably allied to families such as the Lophosoriaceae rather than the Gleicheniaceae as had been previously supposed. The nearest living relative, Lophosoria quadripinnata, grows within a mean annual temperature range of 8–22° C, and a mean annual precipitation range of 195–1977 mm. The presence of Lophosoria cupulatus at palaeolatitudes of 55–65° S implies that during the Aptian the southern high latitudes were a minimum of 12° C warmer than the present day.
肥沃的蕨类植物叶子被描述为Lophosoria cupulatus sp. 11 .含有独特的孢子Cyatheacidites annulatus。该叶化石在形态上与早白垩世格雷氏属和微叶状植物属相似,其在冈瓦纳的时空分布与分散的孢子cyatheacidite相吻合。白垩纪南半球一些归属于Gleichenites和Microphyllopteris的材料可能与Lophosoriaceae等科有关,而不是之前认为的Gleicheniaceae。其最接近的现存亲缘植物——四合欢(Lophosoria quadripinnata)生长在8-22°C的年平均温度范围内,年平均降水量范围为195-1977毫米。在55-65°S的古高纬度地区存在着牛皮草,这表明在阿普tian时期,南部高纬度地区的温度至少比现在高12°C。
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引用次数: 53
First occurrence of the Ediacaran fossil Charnia from the southern hemisphere 首次在南半球发现埃迪卡拉纪Charnia化石
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619329
C. Nedin, R. Jenkins
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引用次数: 15
Chuaria Walcott, 1899 in the lower Wessel Group, Arafura Basin, northern Australia Chuaria Walcott, 1899年摄于澳大利亚北部Arafura盆地的下Wessel群
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619235
P. Haines
The carbonaceous fossil Chuaria circularis Walcott (1899) is reported from the Raiwalla Shale of the Wessel Group (onshore Arafura Basin), Northern Territory. As most occurrences of Chuaria are Proterozoic and the majority of these are Neoproterozoic, the Early to Middle Cambrian age previously assigned to the Wessel Group is no longer well supported, especially since the main fossil evidence on which this was based is no longer applicable. A carbonate unit containing a Middle Cambrian trilobite fauna, previously considered part of the Wessel Group, is now interpreted to lie unconformably above this group. The discovery has regional stratigraphic significance in northern Australia and the ages of other poorly dated successions, commonly assumed to be of Early Cambrian age, requires reassessment.
碳质化石Chuaria circularis Walcott(1899)是在北领地Wessel组(Arafura盆地)的Raiwalla页岩中发现的。由于Chuaria的产状多为元古代,其中大部分为新元古代,因此以前划分给Wessel群的早至中寒武纪已不再得到很好的支持,特别是作为其依据的主要化石证据已不再适用。一个含有中寒武纪三叶虫动物群的碳酸盐单元,以前被认为是韦塞尔群的一部分,现在被解释为不整合地位于该群之上。这一发现在澳大利亚北部具有区域地层学意义,而其他年代不确定的序列(通常被认为是早寒武纪)的年龄需要重新评估。
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引用次数: 7
A new species of triplinerved Laurophyllum from the Eocene of Nerriga, New South Wales 标题新南威尔斯Nerriga始新世三系月桂属一新种
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619332
J. Conran, D. Christophel
A new fossil triplinerved dicotyledon leaf, Laurophyllum acrocryptocaryoides Conran & Christophel (Lauraceae) from Eocene deposits at Nerriga is described. The fossil is similar to the previously described L. acrodromum Hill, also from this site, but differs in leaf shape and cuticular features. L. acrocrytocaryoides also resembles some members of the extant genus Cryptocarya and its relationship to extant taxa is discussed.
报道了一种新的三轴双子叶化石,Laurophyllum acrocryptocaryoides Conran & Christophel (Laurophyllum acrocryptocaryoides)。该化石与先前描述的L. acrodromum Hill相似,但在叶片形状和表皮特征上有所不同。本文还讨论了隐果属植物与现存分类群的关系。
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引用次数: 12
Palaeontology of Devonian thermal spring deposits, Drummond Basin, Australia 澳大利亚德拉蒙德盆地泥盆纪温泉沉积古生物学
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619328
M. Walter, S. McLoughlin, A. Drinnan, J. Farmer
Molecular phylogenetic studies of extant organisms have shown that those branches of the Bacteria and Archaea that lie closest to the “last common ancestor” of all life are occupied by hyperthermophiles. At the same time, the search for former life on Mars has focussed on thermal spring deposits. For these reasons there is interest in the palaeobiology of ancient thermal spring deposits on Earth. Many such deposits are known but very few have been studied by palaeobiologists. The Devonian sinters of the Drummond Basin, Australia, rank with the Rhynie cherts of Scotland as the oldest well established examples of fossil subaerial hot springs. The Drummond Basin sinters are closely comparable with modem examples in Yellowstone National Park, Wyoming, and elsewhere. It is possible to recognise a range of palaeoenvironments from high temperature vents through former hot-water channelways and terraces to ambient temperature marsh deposits. Cyanobacterial stromatolites and microfossils are abundant in those pala...
现存生物的分子系统发育研究表明,那些最接近所有生命的“最后共同祖先”的细菌和古细菌分支被超嗜热菌占据。与此同时,在火星上寻找以前的生命的工作主要集中在温泉沉积物上。由于这些原因,人们对地球上古代温泉沉积物的古生物学产生了兴趣。许多这样的沉积物是已知的,但很少被古生物学家研究过。澳大利亚德拉蒙德盆地的泥盆纪燧石与苏格兰的Rhynie燧石一起,被认为是最古老的陆地温泉化石。德拉蒙德盆地的烧结矿与黄石国家公园、怀俄明州和其他地方的现代烧结矿非常相似。有可能识别一系列的古环境,从高温喷口到以前的热水通道和梯田,再到环境温度的沼泽沉积。这些古沉积物中含有丰富的蓝藻叠层石和微化石。
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引用次数: 63
A new ‘bone-cracking’ dasyurid (marsupialia), from the Miocene of Riversleigh, northwestern Queensland 一种新的“开裂”的dasyurid(有袋目动物),来自昆士兰州西北部的里弗斯利中新世
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619205
S. Wroe
Ganbulanyi djadjinguli gen. et sp. nov. is described on the basis of an upper molar and premolar from an early-late Miocene site in Riversleigh, northwestern Queensland. The paucity of material constrains certainty in the determination of it's phylogenetic position. But, among dasyuromorphians, and dependent on the interpretation of tooth homology, this species shows unequivocal synapomorphies only with the derived dasyurine Sarcophilus, and/or Barinya wangala, a possible sister taxon to the modern dasyurid radiation (i.e., Sminthopsinae, Phascogalinae, Dasyurinae). Other apomorphies, evident in G. djadjinguli, are common to both carnivorous thylacinids and dasyurids within the order. Some dental features of Ganbulanyi djadjinguli are treated as adaptations to a ‘bone cracking’ habitus. If this interpretation is correct, then this species represents the only pre-Pliocene Australian taxon known to occupy such a niche and perhaps the smallest specialist ‘bone-cracker’ within Mammalia.
Ganbulanyi djadjinguli gen. et sp. 11是在昆士兰西北部Riversleigh早-晚中新世遗址的上磨牙和前磨牙的基础上描述的。材料的缺乏限制了确定其系统发育位置的确定性。但是,在dasyromorphians中,依赖于牙齿同源性的解释,该物种仅与衍生的dasyuria Sarcophilus和/或Barinya wangala显示出明确的近亲关系,Barinya wangala可能是现代Dasyurinae的姊妹分类单元(即,Sminthopsinae, Phascogalinae, Dasyurinae)。在G. djadjinguli中很明显的其他类形在该目的肉食性袋狼和袋狼中都是常见的。Ganbulanyi djadjinguli的一些牙齿特征被认为是对“骨裂”习惯的适应。如果这个解释是正确的,那么这个物种代表了唯一一个已知占据这样一个生态位的前上新世澳大利亚分类群,也许是哺乳动物中最小的专业“骨头客”。
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引用次数: 21
Revision of the Brachyopidae (Temnospondyli) from the Triassic of the Sydney, Carnarvon and Tasmania Basins, Australia 澳大利亚悉尼、卡纳文和塔斯马尼亚盆地三叠纪短肢动物科(Temnospondyli)的修正
IF 1.3 4区 地球科学 Q3 PALEONTOLOGY Pub Date : 1998-01-01 DOI: 10.1080/03115519808619331
A. Warren, C. Marsicano
Australian Triassic strata have produced more species of brachyopid Amphibia than are known elsewhere. Some were described last century and most before the widespread use of cladistics. There is thus a need for redescriptions which include identification of characters useful for character analysis. This paper re-examines the Australian brachyopids as a preliminary to a cladistic analysis of the Brachyopidae, clarifies some controversial aspects of their anatomy and taxonomy, and concludes that all except Trucheosaurus major are true brachyopids. Notobrachyops picketti is unlike other members of the taxon in the absence of a sensory canal system.
澳大利亚三叠纪地层产生了比其他地方已知的更多种类的短肢类两栖动物。有些是上个世纪描述的,大多数是在分类学广泛使用之前描述的。因此,需要重新描述,其中包括对字符分析有用的字符识别。本文对澳大利亚的短肢类进行了重新研究,作为对短肢类分支分析的初步研究,澄清了其解剖学和分类学上一些有争议的问题,并得出结论:除了大真龙外,所有短肢类都是真正的短肢类。皮克蒂Notobrachyops picketti与该分类单元的其他成员不同,它没有感觉管道系统。
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引用次数: 31
期刊
Alcheringa
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