THE EARLY DEVONIAN ARMOURED AGNATHANS OF PODOLIA, UKRAINE
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چکیده
منابع مشابه
Microanatomy of Early Devonian book lungs.
The book lungs of an exceptionally preserved fossil arachnid (Trigonotarbida) from the Early Devonian (approx. 410 Myr ago) Rhynie cherts of Scotland were studied using a non-destructive imaging technique. Our three-dimensional modelling of fine structures, based on assembling successive images made at different focal planes through the translucent chert matrix, revealed for the first time foss...
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Coelacanths are well-known sarcopterygian (lobe-finned) fishes, which together with lungfishes are the closest extant relatives of land vertebrates (tetrapods). Coelacanths have both living representatives and a rich fossil record, but lack fossils older than the late Middle Devonian (385-390 Myr ago), conflicting with current phylogenies implying coelacanths diverged from other sarcopterygians...
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S of the PAPERS printed in the PHILOSOPHICAL TRANSACTIONS of the ROYAL SOCIETY of LONDON. Yols. 1 to 6 (1800-1854), 8vo, at 10s. each. (Vola. 3, 4 and 6 out of Print.) PROCEEDINGS of the ROYAL SOCIETY of LONDON, being a continuation of the foregoing Series. Vols. 8 to 14, and 16 to 74, 21s. each, cloth. Yol. 75 is composed of Obituary Notices of Fellows Deceased, 1898-1904. Price 15s. With Vol....
متن کاملMolecular phylogeny of early vertebrates: monophyly of the agnathans as revealed by sequences of 35 genes.
Extant vertebrates are divided into three major groups: hagfishes (Hyperotreti, myxinoids), lampreys (Hyperoartia, petromyzontids), and jawed vertebrates (Gnathostomata). The phylogenetic relationships among the groups and within the jawed vertebrates are controversial, for both morphological and molecular studies have rendered themselves to conflicting interpretations. Here, we use the sequenc...
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ژورنال
عنوان ژورنال: Palaeontolgia Polonica
سال: 2011
ISSN: 0078-8562
DOI: 10.4202/pp.2011.66_001