A coccosteid nuchal bone from the Middle Devonian Tamme Cliffs locality in Estonia is described as Dickosteus cf. threiplandi , D . threiplandi being a common species in the Middle Devonian of the Orcadian Basin, Scotland. A number of other bones from Tamme Cliffs are also placed in this genus. It is already known that the coccosteids Coccosteus cuspidatus and probably Millerosteus minor are present in both areas. A final coccosteid genus Watsonosteus has been shown previously to also be present in both areas. We can confirm that the sequence of coccosteid genera is the same in both the Orcadian Basin and Estonia and is, from the lowest horizon, Coccosteus – Dickosteus – Millerosteus – Watsonosteus . The coccosteids in Estonia are also associated with other Scottish faunal elements (including co-specific species), such as other placoderms, acanthodians and sarcopterygians. This implies a very close connection between the two areas in the Middle Devonian. Some of the acanthodian species of the Orcadian Basin are also present in Belarus and Severnaya Zemlya, suggesting that other Orcadian Basin forms, including coccosteids may be present at these localities and perhaps elsewhere on the Old Red Sandstone continent. Further investigation may allow a continent-wide correlation at species level across the whole continent.

Michael J. Newman

Jan L. Den Blaauwen

Tormi Tuuling

Scottish Journal of Geology

尽管自 1965 年以来才出版，《苏格兰地质学杂志》有着悠久的历史。它是格拉斯哥地质学会和爱丁堡地质学会的联合出版物，在 1965 年之前出版了单独的 TRANSACTIONS：从 1860 年的格拉斯哥和 1863 年的爱丁堡。传统上，该杂志一直是所有论文的焦点苏格兰地质及其毗邻地区的各个方面，包括周围的海域。出版政策一直是外向型的，编辑鼓励评论论文和关于地球科学更广泛方面的论文，这些论文不能仅根据苏格兰地质学进行讨论。苏格兰的多样化地质学继续为这项研究提供一个重要的自然实验室地球科学；在苏格兰岩石上进行了许多开创性的地质研究，多年来，这项工作的大部分成果已发表在《期刊》及其前辈上。《期刊》在世界范围内享有很高的声誉，并打算保持其在世界范围内的地位。在地球科学出版物中名列前茅。

The Scottish Journal of Geology has a rich history since its inception in 1965. It is a joint publication of the Geological Society of Glasgow and the Edinburgh Geological Society, having previously published separate TRANSACTIONS since 1860 in Glasgow and 1863 in Edinburgh. Traditionally, the journal has focused on various aspects of geology in Scotland and its adjacent regions, including the surrounding seas. The publication policy has been outward-looking, encouraging submissions of review papers and research on broader aspects of Earth sciences that are not limited to Scottish geology. The diverse geology of Scotland continues to provide an important natural laboratory for Earth science research, with many pioneering geological studies published in this journal and its predecessors over the years. The Scottish Journal of Geology enjoys a high reputation worldwide and aims to maintain its leading position among global Earth science publications.

《Scottish Journal of Geology》自1965年创刊以来，承载着丰富的历史。它是格拉斯哥地质学会与爱丁堡地质学会的联合出版物，之前曾分别出版过《TRANSACTIONS》，自1860年起在格拉斯哥和1863年在爱丁堡出版。该期刊一直关注苏格兰及其周边地区的地质研究，包括周围海域的相关主题。期刊的出版政策相对开放，编辑鼓励投稿者提交评论性论文以及涉及更广泛地球科学领域的研究，这些研究不必局限于苏格兰的地质。苏格兰多样的地质特征为地球科学研究提供了重要的自然实验室，许多开创性的地质研究成果已在该期刊及其前身上发表。《Scottish Journal of Geology》在全球享有盛誉，致力于保持其在国际地球科学出版物中的领先地位。

Category	Quartile
地球科学	4
地球科学, 地质学	4

Middle Devonian coccosteid (Arthrodira, Placodermi) biostratigraphy of Scotland and Estonia

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