کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4746931 1642067 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new trionychid turtle from the Early Cretaceous of Heilongjiang Province, Northeastern China
ترجمه فارسی عنوان
لاکپشت تریونیچید جدید از کرتاسه اولیه استان هیلونگجیانگ، شمال شرقی چین
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
چکیده انگلیسی

A new soft-shelled turtle (“Trionyx” jixiensis sp. nov.) from the Lower Cretaceous Chengzihe Formation, Jixi city, Heilongjiang Province, China is described on the basis of a nearly complete carapace. The new species is diagnosed by the absence of suprascapular fontanelles and absence of a preneural; eight neurals, tetragonal fifth neural; and eight pairs of costals, with the large eighth costals meeting after the eighth neural. Due to the incompleteness of the specimen and confused classification of the genera of trionychids, the new species cannot be included in any genus of Trionychinae and is temporarily assigned to “Trionyx” (sensu lato). “Trionyx” jixiensis is one of the earliest trionychids, its discovery indicates that the family was already diversified during the Early Cretaceous in Asia.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cretaceous Research - Volume 56, September–December 2015, Pages 155–160
نویسندگان
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