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Aleksandar Mezga Christian A. Meyer Blanka Cvetko Te&#x;ovi&#x; Zlatan Bajraktarevi&#x; Ivan Gu&#x;i&#x; 《Cretaceous Research》2006,27(6):735-742
The first discovery of dinosaur footprints on the Dalmatian part of the Adriatic-Dinaric carbonate platform (ADCP) is reported. They constitute the geologically youngest record of footprints on the ADCP. The trackbearing layer was formed in the intertidal environment and represents the final stage of a shallowing-upward cycle. Just below it, a heavy dinoturbated limestone layer can be observed. Microfacies analysis, incorporating evidence from benthic foraminifera and algae, indicates a Late Turonian–Early Coniacian age. The overall morphology and size of the footprints points to sauropod dinosaurs; they represent the largest forms recorded so far on the ADCP. This hints at a prolonged sauropod presence on the platform and to its Late Cretaceous connection to the continent rather than isolation. 相似文献
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Recently discovered dinosaur bones in submerged near-shore deposits of southwest Istria include one vertebra, one femur, and two rib fragments. They all show well-developed vascularization. The large amounts of primary bone tissue in the vertebral and femoral compacta as well as in one rib fragment suggest that they belong to sub-adult animals which were growing rapidly. The structure of a second rib fragment differs in that it consists of secondary bone. The absence of lines of arrested growth is evident in all investigated bones. This suggests a sustained manner of bone deposition. 相似文献
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Enrique Pérez Rosa M. González-Delgado Clive Tadhunter Zlatan Tsvetanov 《Astrophysics and Space Science》1990,171(1-2):71-75
We present new narrow band images of NGC 4151, taken in excellent seeing conditions with the 4.2-m William Herschel Telescope on La Palma. These reveal a wealth of detail that can be used to test models for the anisotropy of the narrow-line region.Paper presented at the 11th European Regional Astronomical Meetings of the IAU on New Windows to the Universe, held 3–8 July, 1989, Tenerife, Canary Islands, Spain. 相似文献
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One hundred and forty six dinosaur footprints occur on the Cenomanian outcrop of Fenoliga. They are arranged in six trackways and six footprint groups (a–f). Two basic footprint types can be distinguished: firstly, large circular-elliptical sauropod footprints, forming four trackways (I, III, V, VI) and five footprint groups (a–e), and secondly, smaller, tridactyl theropod footprints forming two trackways (II and IV) and one footprint group (f). Three type specimens, one sauropod and two theropod, were determined during the course of the work. Since no dinosaur bones have been discovered in the Cenomanian rocks of Istria so far, these findings are outstandingly important in the analysis of the regional dinosaur fauna. 相似文献
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