贵州六枝地区丁菲羊齿属之一种,兼论丁菲羊齿植物在中国的研究

对贵州省六枝县郎岱地区的种子蕨类化石———丁菲羊齿属（Ｔｈｉｎｎｆｅｌｄｉａ）进行了外部形态与表皮结构的研究,确定其种为菱形丁菲羊齿（Ｔ．ｒｈｏｍｂｏｉｄａｌｉｓＥｔ．）。与已知各种对比研究后,将产于陕北延长层的座延羊齿型丁菲羊齿（Ｔ．ａｌｅｔｈｏｐｔｅｒｏｉｄｅｓＳｚｅ）和松弛丁菲羊齿（Ｔ．ｌａｘａＳｚｅ）并入菱形丁菲羊齿。同时就丁菲羊齿在中国的研究,提出该属不应并入厚羊齿属（Ｐａｃｈｙｐｔｅｒｉｓ）的观点。     

贵州兴义猫猫洞更新世晚期人类牙齿釉质崩裂痕迹

作为一种特殊形式的牙齿磨耗与使用痕迹,牙齿崩裂与古人类及古代人群食物质地、获取与制作食物方式、某些行为活动、生活习俗密切相关。然而,迄今对人类牙齿崩裂的关注程度及开展的研究还不多,尤其缺乏更新世晚期人类牙齿崩裂出现率和表现特点方面的数据。本文对发现于贵州兴义猫猫洞的更新世晚期人类牙齿釉质崩裂痕迹大小、出现率、表现特点进行了观测分析。研究发现,附连在3件猫猫洞人类下颌骨上的牙齿具有明显的釉质崩裂现象,出现率与生活环境恶劣的狩猎-采集人群接近。值得注意的是猫猫洞人类牙齿釉质崩裂出现在几乎所有臼齿的咬合面边缘。作者认为出现在猫猫洞人类臼齿的釉质崩裂是由于强力咀嚼和研磨坚硬食物所致,推测当时人类的食物粗糙,坚硬,富含颗粒(如坚果、种子等)。在猫猫洞下颌骨上观察到的波及几乎全部牙齿的牙周病也为猫猫洞人类严酷生活环境和粗糙食物的推测提供了一定程度的支持。此外,几乎所有具有釉质崩裂的臼齿都呈现大小不等的多发性的釉质崩裂痕迹的表现特点提示猫猫洞人类长时间大量食用这种粗糙、坚硬食物。     

Morphological Studies on Pterophyllum guizhouense sp. nov. and P. astartense Harris from the Late Triassic of Guizhou,China

The morphological characters of Pterophyllum guizhouense sp. nov. were reported and those of P. astartense Harris were supplied and emended. Meanwhile, the significance of cuticle characters chosen in the identification of fossil plants was also discussed.     

贵州5种药用豆芫菁形态比较研究

本文对贵州5种药用豆芫菁外部形态及其雌、雄外生殖器特征进行比较研究,旨在增补和完善该类昆虫的形态特征,为药用芫菁的分类及种类鉴定提供系统全面的参考资料。结果表明:所研究的5种药用豆芫菁的外部形态特征(体长、触角、头部、前胸背板、雄性前足胫节)及雌雄外生殖器构造(阳茎基、阳茎、产卵瓣)在种间既有共性,又存在明显差异,可作为该类药用昆虫物种准确鉴定的主要依据。此外,本文提供了这5种豆芫菁的整体照片、局部特征图及分种检索表。     

Liverwort fossils from the Late Triassic of Baiyin City,Gansu Province,and their geological significance

Although liverworts are widely distributed around the world with a large number of extant species, reliable fossil records are relatively rare. Here, we report a new species, Ricciopsis baojishanensis Han and Yan, n. sp. (Ricciaceae) and an unnamed species, Hepaticites sp. from the Late Triassic Nanying’er Formation in Baojishan Basin, Baiyin City, Gansu Province, Northwest China. The generic designation is based on detailed comparison of the gross morphology with related fossil and extant species. The new species is characterized by its rosette-forming thallus, dichotomous branching, ribbon-like segments and entire margins. The current fossils represent the first record of liverwort from the Late Triassic in Baojishan Basin, Gansu Province. Based on the different fossil records of the Ricciaceae, we suggest that these taxa were widely distributed during Late Triassic to Oligocene worldwide, mainly in warm temperate and tropical environments, similar with their current distribution. The discovery of the present fossils indicates that the climate of Baojishan Basin in Late Triassic is warmer and more humid than that of today.     

贵州产耳蕨属（鳞毛蕨科）一新种—韭菜坪耳蕨

描述了贵州耳蕨属一新种,即韭菜坪耳蕨(Polystichum jiucaipingense P. S. Wang et Q. Luo)。新种与栗鳞耳蕨(P. castaneum(Clarke) Nayar et Kaur)相近,但植株较小,叶柄、叶轴上的鳞片淡棕色,孢子囊群着生于全部羽片上而不同。     

贵州葱属一新种

描述了贵州葱属一新种--梵净山韭(Alliumfan jingshanense),它与太白韭A.prattii相似,但叶具长的叶柄,花白色,内轮花被与外轮花被近等大,花丝短于花被而不同.     

贵州梵净山祝蛾科二新种记述（鳞翅目：祝蛾科）

记述采自贵州梵净山国家级自然保护区的祝蛾科2新种：黄褐顶祝蛾Carodista flavicana Wu(祝蛾亚科Lecithocerinae)与刺茎俪祝蛾Philharmonia spinula Wu(瘤祝蛾亚科Torodorinae)。模式标本保存在中国科学院动物研究所昆虫标本馆。     

Qianlabeo Striatus, a New Genus and Species of Labeoninae from Guizhou Province, China (Teleostei: Cyprinidae)

Qianlabeo striatus gen. et sp. nov. is described from a stream tributary to the Beipan Jiang of the upper Zhu Jiang (Pearl River) drainage in Matou, Anshun County, Guizhou Province, China. This monotypic genus is mainly characterized by its oromadibular morphology, namely an upper lip only present in and fully adnate to the side of the upper jaw, not covered by the pendulous rostral fold; the median portion of the upper jaw lacking an upper lip but bearing a thin, flexible and cornified cutting edge that is fully covered by the pendulous rostral fold; a postlabial groove prolonged, extended anteromedially close to the anteromost point of the midline of the lower lip but not to meet with its counterpart. The type species of this genus, Q. striatus has a longitudinal dark stripe along the side of the body.     

贵州省楼梯草属(荨麻科)植物2新记录种

该文报道了贵州省荨麻科(Urticaceae)楼梯草属(ElatostemaJ.R.G.Forst.)植物2新记录,即环江楼梯草(E.huanjiangense W.T.WangY.G.Wei)和巨序楼梯草(E.megacephalum W.T.Wang)。     

贵州六道木属一新种——荔波六道木

报道了贵州忍冬科（Caprifoliaceae）六道木属（Abelia R. Br.）1个新种,即荔波六道木（Abelia lipoensis M. T. An et G. Q. GOU）。新种与糯米条（A. chinensis R. Br.）近缘,不同点在于小枝和叶背无毛,花序宽大,疏松,呈宽圆锥状,花萼裂片近无毛,花冠小,长6~9 mm,白色,与萼裂片近等长或稍长。     

贵州蕨类植物新记录

报道了贵州省新记录的4种蕨类植物,分属3科,4属,它们是上毛凤丫蕨（Coniogramme suprapilosa）、具腺凸轴蕨（Metathelypteris glangdulosa）、光滑方秆蕨（Glaphyropteridopsis glabrata）和混淆鳞毛蕨（Dryopteris commixta）。     

贵州关岭海龙类一新属种——双列齿凹棘龙

简要记述了产自贵州关岭小凹组的一具基本完整的骨架,在此基础上建立了海龙类的一个新属种,双列齿凹棘龙(Concavispina biseridens)。新种最明显的鉴定特征是:上颌骨前端有两列钝的牙齿,后部无齿;脊椎神经棘背缘形成V形缺口。凹棘龙与新铺龙(Xinpusaurus)独有的衍征包括上颌骨前段背向弯曲,颈椎数目小于5枚,肱骨近端比远端宽。这些特征指示凹棘龙与新铺龙可能具有较近的亲缘关系。     

单瞳资眼蝶贵州省新纪录属种及一新异名(鳞翅目:蛱蝶科)

在贵州荔波茂兰国家级自然保护区采集到的单瞳资眼蝶Zipaetis unipupillata Lee,1962,经鉴定为贵州省新纪录种,同时也是该属昆虫在贵州省的首次发现。同时提出单瞳资眼蝶一新异名,即Zipaetis scyllax yunnanensis Chou,YuanZhang,2001 syn.nov.。本文给出资眼蝶属Zipaetis Hewitson,1863的种级名录和地理分布。     

贵州水绵属一新种

安顺水绵　新种　图 1Spirogyra anshunensis G.Q.Gou,sp.nov.Fig.1Proxima S.crenulata Singh quae differtcellulisvegetativis angustis;espisporio duplici.Haecspecies affinis S.multistrata Bi quod differt cellulisvegetativis angustis;chromatophoris2 ;mesosporiointeriore crasso etcrasse reticulato.Cellulis vegetativis 1 35～ 1 45μm latis,1 5 0～2 90μm longis;dissepimentis planis;chromatopho-ris 8～ 1 0 ,anfractibus 0 .5～ 2 ;conjugations scalari;tubo conjugationis ex utraque cellula mascula etfem…     

Plants of Leptostrobus Heer （Czekanowskiales） from the Early Cretaceous and Late Triassic of China, with Discussion of the Genus

Investigation of the Mesozoic seed plant Leptostrobus Heer from the Yangcaogou Formation of the Late Triassic and the Yixian Formation of the Early Cretaceous, Liaoning Province, China, provides new Insight Into Its general morphology and geographical distribution. The materials of L. cancer from the Yixian Formation described herein are later than all the past findings of this species and add to the record of L. cancer during the Early Cretaceous. Based on well-preserved specimens, the specific diagnosis Is slightly emended and the reconstructlon of L. cancer Is perfected. The materials from the Yangcaogou Formation of the Late Triassic are placed in L. spheericus, in addition, we review the history of investigation of the genus Leptostrobus since its establishment in 1876 and discuss the main characteristics of each species.     

Early Triassic bivalves from the Feixianguan Formation in Xingyi,Guizhou and the Ximatang Formation in Qiubei,Yunnan (southern China)

Based on newly collected materials from the Lower Triassic Feixianguan Formation of Xiongwu section in Xingyi, Guizhou and the Ximatang Formation of Ximatang section in Qiubei, Yunnan, southern China, nine species belonging to seven genera are described. Two bivalve assemblages are recognized and regionally correlated in South China. The bivalve assemblage from the Feixianguan Formation of Xiongwu exhibits a higher diversity including seven species belonging to seven genera: Claraia griesbachi, Leptochondria virgalensis, Entolium (Entolium) microtis, Towapteria scythicum, Bakevillia exporrecta, Bositra sp., and Unionites? fassaensis. In contrast, the bivalve assemblage from the Ximatang Formation of Ximatang has a much lower diversity, consisting of only two species, i.e., Claraia griesbachi and Claraia radialis. Additionally, C. griesbachi and C. radialis, as the most common species of Claraia in the Early Triassic, are revised.