日本古生物学會報告・紀事
Online ISSN : 2186-0955
Print ISSN : 0031-0204
ISSN-L : 0031-0204
1937 巻 , 7 号
選択された号の論文の7件中1~7を表示しています
  • 矢部 長克, 淺野 清
    1937 年 1937 巻 7 号 p. 39-41
    発行日: 1937年
    公開日: 2011/03/18
    ジャーナル フリー
    Rotaliatina屬の地質的分布は, 從來Mexico州Carrizoの上部始新期のみと限られて居たが, 今囘Javaの上部鮮新期と考へられてゐる砂岩中より, 本屬の一新種 Rofaliatina globoda n.sp. を發見したことにより, 地質的分布に變革を要することになつた。茲に興味あることは, アメリカの始新期有孔蟲の或者が, 現在のIndo-pacificの有孔蟲類と甚だ密接な關係にあることが, CUSHMAN氏の研究に依り明かにされた所であるが, 本新種の發見に依り, 一層其感を深くする。尚ほ, REUSS氏のRotalina bulimoides REUSS, 1851はRotaliatinaに屬するものと考へられ, 斯くすれば, 本屬の地質的分布はUpp. Eocene (Carrizo, Mexico)-Miocene (Hermsdorf, near Berlin)-Pliocene (Bodjong, Bantam Java) となる。
  • 淺野 清, 中村 正義
    1937 年 1937 巻 7 号 p. 42-49
    発行日: 1937年
    公開日: 2011/03/18
    ジャーナル フリー
    新潟, 秋田の兩縣下に發達する油田地方に, Cassidulina屬有孔蟲が, 多數産出することに就いては, 1924年, 矢部教授, 半澤助教授の御研究に依つて知られ, 三浦半島に於いても, 同年, 兩先生の報告があり, 又最近筆者の一人 (淺野) が, 既に記録した。其後東北帝國大學理學部地質學古生物學教室に蒐集された標本に據れば, Cassidmlina屬有孔蟲は, 現生種, 化石種共に, 日本全國に亙つて, 多数産出することが知られるに至つた。之等の有孔蟲類は, 筆者等の觀察に基けば, 其大部分のものが, 所謂日本要素とも稱すべきものであるが, 日本海側 (裏日本) のものは, CaliforniaのSan Pedroのものと密接な關係がある。
  • 小林 貞一
    1937 年 1937 巻 7 号 p. 50-53
    発行日: 1937年
    公開日: 2011/03/18
    ジャーナル フリー
    素木卓二學士採集の忠清北道丹陽郡永春面華山里太華山南坂の寺洞統より産出せし木葉蝦類を研究するに新屬新種にして, 其の特性類似諸屬との比較識別を記す。
  • 鹿間 時夫
    1937 年 1937 巻 7 号 p. 54-69
    発行日: 1937年
    公開日: 2011/03/18
    ジャーナル フリー
    The occurrence of a rich mammalian fauna in some of the limestone fissures and caves of Kuzuii in Aso-gun, Totigi-ken, came to the first time in 1930 to the notice of geologists ; since that time, the author repeated excavations of the ossuaries to the last year, with kind assistance of Mr. O. TANAKA, a resident in Kuzuii, to whom he is much obliged for facilitating the dangerous and difficult task of excavation and fossil collection. The laboratory work of fossils collected. is still in progress under the guidance of Prof. H. YABE in the Institute of Geology and Palaeontology, TOhoku Imperial University, Sendai, where all the materials obtained by excavation are deposited.
    The fissure deposits of Kuzuü, the “Kuzuü formation” of the author, is divisible into three parts, lower, middle and upper. The lower Kuzuü formation consists of two fossil beds, the lower, Sus bed and the upper, Stegodon bed; the upper Kuzuü has seven, Geoclemys-, amphibia-, Palaeoloxodon-, Parastegodon-, Microtus-Mels-, carnivora-and Moschus beds in ascending order; and the middle Kuzuü is barren of fossils. In the present article only the Geoclemys-, amphibia-, Micraus-Meles-, carnivora- and Moschus beds of the upper Kuzuü are taken into consideration.
    The fossil bones, teeth, antlers and shells procured by the author from Kuzuii during the pas six years amount to 4033 in number; they comprise 36 species of rnammalia, 5 species of ayes, 3 species of reptilia and 3 species of amphibia (anura), altogether representing more than 424 (or more) individuals in total. The actual number of samples and the estimated number of individuals (in parenthesis) of each species are given in Table 1; from this table one can get the general, though faint, idea of the numerical ratio of skeletal parts excavated of each species to the approximate individual numbers by estimation. In Table 2 are given only the estimated numbers of individuals of each species in order to show the relative population among the different species; perhaps this statistical method may serve for palaeoecological analyses of the fossils beds or consideration of the mechanism of the fossil entombment. In strict sense, of course, it is almost impossible to estimate the total number of specimens preserved in one ossuary, especially by intermittent excavaations in small scale as in the author's enterprise; yet his intention lies in knowing, if possible, the proportion in numerical value, though only in approximation, of the skeletal parts of different animals procured from each ossuary.
    The specific elements of the fossil fauna under consideration are divided into the following three categories according to their frequency or population.
    1. Dominant cements, in which the finds of the skeletal parts correspond to 20 individuals or more, and are found in all or at least in the majority of different ossuaries.
    2. Subordinate elements of A type in which the finds of the skeletal parts correspond to less than 20 and more than 5 individuals and are found at least in the majority of the different ossuaries.
    3. Subordinate elements of B type in which the finds of the skeletal parts corresponi to less than 5 individuals and are found in only a limited number of the ossuaries.
    The dominant elements and subordinate ones of A type are listed in Table 3; most of them are fossorial in habit, and their skeletal parts are rather completely recovered. On the contrary, the subordinate elements of B type are known only of very few and fragmental remains.
    The Kuzuiü ossiferous fissures, so far as the 5 fossil beds are concerned, are more or less like the Conard fissures in Arkansas, United States of America, in the constitution of fauna.
  • 小林 貞一
    1937 年 1937 巻 7 号 p. 70-86_1
    発行日: 1937年
    公開日: 2011/03/18
    ジャーナル フリー
    筆者がベリルン滞在中ダーメス氏の記載せし原品を研究せし結果は次の様である。
    1)屬的位置の變更を要するもの
    ダーメス氏の種 屬的位置
    Conocephalites frequens Chuangia
    Conocephalites Prochuangia
    Conocephalites typus Inouyella
    Conocephalites subquadratus Anomocarella (?)
    Anomocare minus Anomocarella
    Anomocare planum Anomocarella
    Anomocare nanum Metagraulos
    Anomocare subcostatum Anomocarella
    Liostracus talingensis Ptychoparia
    Liostracus megalurus Megalophthalmus
    2)Anomoccare latelinbatumは複合種にしてLioparia latelimbatum, Saimachia damesi(新屬新種)及びChuangia sp.を含み,ワルコットのlatelimbatumは全然相異ないLioparella walcotti (新屬新種) として區別される。
    3)Agnostus chinensis DAMESはPseudagnostus orientalis, Agnostus hoijormisを含む複合種であつてダーメスの種をorientalisのsynonymとして, hoiformisは獨立の種として取扱ふ。ワルコットのchinensisは全然之等と相異る種でPeronopsis rakuroensisとして區別さる可きである。
    之等諸化石の示す諸フォーナの時代に就いて種々なる意見が發表されてゐたが, 寨馬集のものは上部寒武利亞紀に,大岑のものはChuangia frequensは上部寒武利亞紀, 他中部寒武利亞紀, 臥龍舖のものは, 中部寒武利亞紀に屬する。
  • 鈴木 好一
    1937 年 1937 巻 7 号 p. 87-92_1
    発行日: 1937年
    公開日: 2011/03/18
    ジャーナル フリー
    徳永重康先生並びに高井冬二, 直良信夫の兩氏が昭和9年夏葛生町築地の石灰洞堆積物中より採集された陸貝化石5種に就いて記述した。これらの標本は全てPalaeoloxodonを含む堆積物中より直接採取されたもので, 確に化石であるとの事である。
    この5種の中, Cyclophorus herklotsi, Phaedusa sp. 及びEuhadra quaesitaの3種は既に昭和8年に鹿間時夫氏によつて同じく築地 (及び其他の場所) より報告されて居り, Paludinella? kuzuuensis (n.sp.) とEuhadra brandtii var.(ヲゼマイマイ) とが今囘新たに加へられたものである。この2種には記載を與へておいた。
    5種中種迄確定せる4種は, 新種たるPaludinellaを除けば, 何れも現在當地方に生息してゐる。恐らくPaludinella? kuzuuensisも同様であらうと思はれる。
  • 徳永 重康, 高井 冬二
    1937 年 1937 巻 7 号 p. 93-95_1
    発行日: 1937年
    公開日: 2011/03/18
    ジャーナル フリー
    The Specimen, a fragment of the right horizontal ramus of the mandible containing the first, second, and third molars, was dredged from the sea bottom Off the Island of Kotuti, Kagawa Prefecture in January 1933.It is now preserved at Waseda University, Tokyo.
    The mandible is broken at the anterior margin of the first molar, the ascending ramus and the inner and lower sides of the horizontal ramus being also damaged.
    Palaeopathologically speaking, a number of intresting features are observed in this specimen. First, a compound odontoma of the first and second molars has taken place, which is a benign tumor derived from an abnormal arrangement of dentine, enamel, and cementum and a sporadic calcification in tooth development. Second, a great hypertrophy of the right ramus has happened, which has given rise to a bulbous appearance to the jaw.
    Third, the concavity of the diseased molar is greater than that of a normal molar. Fourth, the breadth of the former is one-and-a-half times that of the normal. And fifth, the enamel figure on the friction surface of the anomalous molar is irregular as shown in the plate. The third molar, which now contains the anterior talon and twelve ridges, has lost 4-8 ridges and the posterior talon. Its grinding had not yet begun. The maximum length of its crown is 180mm., and its width at the sixth ridge 60mm. The height of the crown is 128mm. at the fifth ridge, and 132mm. at the tenth. The frequency of ridges in a standard length of 100mm. is 6.5.
    For reasons given above it is almost impossible to determine its specific name, but the writers believe that it may belong to Palaeoloxodon namadicus (FALCONER and CAUTLEY), the well known Pleistocene elephant.
    Finally the writers wish to express their thanks to Professor Tosikazu Tokoro, Nippon Dental College, for dental information received.
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