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Fig. 5 | BMC Evolutionary Biology

Fig. 5

From: Re-evaluation of the Haarlem Archaeopteryx and the radiation of maniraptoran theropod dinosaurs

Fig. 5

Manual phalanges of several other theropods preserved in highly compacted sediments, showing differences (a-d, f) and similarities (e) in preservation to the manual furrows in the Haarlem specimen. a Right manus of the Thermopolis specimen of Archaeopteryx, showing non-collapsed phalanges without furrows, as they are found in many specimens of this taxon (e.g. London, Berlin, Eichstätt, Munich, 11th specimen). b Right manus of the Solnhofen specimen of Archaeopteryx, showing partially collapsed and crushed phalanges with clearly broken margins. c Left manus of Sciurumimus albersdoerferi (BMMS BK 11) under UV light, showing partially compressed phalanges in this juvenile theropod. d Phalanx II-2 of Compsognathus longipes (SNSB-BSPG AS I 563), showing non-collapsed, but partially broken shaft. e Impression of phalanx I-1 of the holotype of Anchiornis huxleyi (IVPP V 14378), showing the impression of a regular longitudinal furrow, very similar to the impressions seen in the Haarlem specimen. f Phalanx I-1 of Caudipteryx (IVPP V 12430), showing collapse structure distally with clearly broken margins. Scale bars are in mm increments

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