拉布拉達龍屬
Multi tool use
拉布拉達龍屬
化石時期： 晚白堊紀
|
|---|
正模標本的尾椎與鱗甲
|
保护状况
|
|---|
化石
|
科學分類
|
|---|
界：
|
動物界 Animalia
| 門：
|
脊索動物門 Chordata
| 綱：
|
蜥形綱 Sauropsida
|
超目：
|
恐龍總目 Dinosauria
| 目：
|
蜥臀目 Saurischia
|
亞目：
|
蜥腳形亞目 Sauropodomorpha
|
下目：
| 蜥腳下目 Sauropoda
|
|
泰坦巨龍類 Titanosauria
| 屬：
|
拉布拉達龍屬 Laplatasaurus
Von Huene, 1927
|
|
模式種
|
|---|
拉布拉達龍
Laplatasaurus araukanicus
Von Huene, 1929
|
拉布拉達龍屬（屬名：Laplatasaurus）是種泰坦巨龍類恐龍，生存於白堊紀晚期（坎潘階）的南美洲。
在1927年，德國古生物學家弗雷德里克·馮·休尼博士（Friedrich von Huene）首次提及這個名稱，但當時沒有經過正式研究的敘述，所以當時是個無資格名稱（Nomen nudum）[1]。在1929年，馮·休尼將這些化石正式敘述、命名，模式種是Laplatasaurus araukanicus，屬名意為「拉普拉塔蜥蜴」，種名則是衍生於馬普切人的別名「Auracanos」[2]。
同樣在1929年，馮·休尼則在文獻裡提到"L. wichmannianus"，但實際上是南極龍的一個種（A. wichmannianus）的筆誤。在1933年，馮·休尼與查爾斯·馬特里（Charles Alfred Matley）將馬達加斯加泰坦巨龍（T. madagascariensis ）改歸類為拉布拉達龍的一個種，馬達加斯加拉布拉達龍（L. madagascariensis）[3]，該種目前已重新歸類回泰坦巨龍。
拉布拉達龍的化石包含：四肢骨頭、數節背椎、數節尾椎，發現於阿根廷的三個挖掘地點，屬於Allen組地層，地質年代相當於坎潘階。其中有一些化石是理查德·萊德克（Richard Lydekker）發現，當時被歸類於南方泰坦巨龍（T. australis），後來重新歸類於拉布拉達龍。馮·休尼在命名時，沒有選定正模標本。在1979年，何塞·波拿巴將編號MLP 26-306標本，選定為選模標本，包含一個脛骨、一個腓骨，但這兩個化石可能來自於不同個體。
根據估計，拉布拉達龍身長約為18公尺。牠們的背部擁有鱗甲，類似薩爾塔龍，但是拉布拉達龍的鱗甲有較小的稜脊。
馮·休尼在命名時，將拉布拉達龍歸類於泰坦巨龍科，目前仍多沿用這個傳統分類。在1986年，傑米·鮑威爾（Jaime E. Powell）曾將拉布拉達龍拼成Titanosaurus aurakanicus。之後在2003年的重新研究，鮑威爾表是當年是以替代名稱方式使用這名稱[4]。目前拉布拉達龍普遍被認為是有效屬[5]。
參考資料
^ Huene, F. von, 1927, "Sichtung der Grundlagen der Jetzigen Kenntnis der Sauropoden", Eclogae geologicae Helvetiae, 20: 444-470
^ Huene, F. von, 1929, Los Saurisquios y Ornithisquios de Cretaceo Argentino, Anales Museo de La Plata, 2nd series, v. 3, p. 1-196
^ Huene, F. von, and Mately C. A., 1933, "The Cretaceous Saurischia and Ornithischia of the central provinces of India", Palaeontologia Indica, 21: 1-74
^ Powell, J.E., 2003, "Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects", Records of the Queen Victoria Museum 111: 1-173
^ Wilson, J.A. and Upchurch, P (2003) "A revision of Titanosaurus Lydekker (Dinosauria-Sauropoda), the first dinosaur genus with a "Gondwanan" distribution", Journal of Systematic Palaeontology 1(3): 125-160
外部链接
恐龙.NET——中国古生物门户网站。
Laplatasaurus at DinoRuss Web Site
XYHcYJCAi2Y5OQhahS,H,H2,RRRNwjxchtkGS5A6,gxsA PdMAV
Popular posts from this blog
Ramiro Burr's New Blog - to go back: www.ramiroburr.com From Latin rock to reggaeton, boleros to blues,Tex-Mex to Tejano, conjunto to corridos and beyond, Ramiro Burr has it covered. If you have a new CD release, a trivia question or are looking for tour info, post a message here or e-mail Ramiro directly at: musicreporter@gmail.com Top Tejano songwriter Luis Silva dead of heart attack at 64 By Ramiro Burr on October 23, 2008 8:40 AM | Permalink | Comments (12) | TrackBacks (0) UPDATE: Luis Silva Funeral Service details released Visitation 4-9 p.m. Saturday, Rosary service 6 p.m. Saturday at Porter Loring, 1101 McCullough Ave Funeral Service 10:30 a.m. Monday St. Anthony De Padua Catholic Church, Burial Service at Chapel Hills, 7735 Gibbs Sprawl Road. Porter Loring (210) 227-8221 Related New Flash: Irma Laura Lopez: long time record promoter killed in accident NewsFlash: 9:02 a.m. (New comments below) Luis Silva , one of the most well-known ...
1 I having trouble getting my ResourceDictionary.MergedDictionaries to load from app.xaml. My WPF app has a static class with a Main defined and startup object set to it. Within Main I created an instance of App and run it. The override OnStartup fires and the mainwindow.cs InitializeComponent gives the error "Message "Cannot find resource named 'MaterialDesignFloatingActionMiniAccentButton'. If I put the resources in the mainwindow.xaml everything is fine, but I wanted them to load at the app level so I they are not in each page. Any help appreciated. public partial class App protected override void OnStartup(StartupEventArgs e) base.OnStartup(e); var app = new MainWindow(); var context = new MainWindowViewModel(); app.DataContext = context; app.Show(); from the Main.. var app = new App(); app.Run(); app.xaml.. <Application x:Class="GS.Server.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:...
up vote 2 down vote favorite There is a clear pattern that show for two separate subsets (set of columns); If one value is missing in a column, values of other columns in the same subset are missing for any row. Here is a visualization of missing data My tries up until now, I used ycimpute library to learn from other values, and applied Iterforest. I noted, score of Logistic regression is so weak (0.6) and thought Iterforest might not learn enough or anyway, except from outer subset which might not be enough? for example the subset with 11 columns might learn from the other columns but not from within it's members, and the same goes for the subset with four columns. This bar plot show better quantity of missings So of course, dealing with missings is better than dropping rows because It would affect my prediction which does contain the same missings quantity relatively. Any better way to deal with these ? [EDIT] The nullity pattern is confirmed: machine-learning cor...
