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Fig. 2 | Evolution: Education and Outreach

Fig. 2

From: Mammalian organogenesis in deep time: tools for teaching and outreach

Fig. 2

Selected vertebrate embryos of different developmental periods taken (except for h) from the “Normentafeln zur Entwicklungsgeschichte der Wirbeltiere” edited by Franz Keibel from 1897 to 1938 (Hopwood 2007) and selected discrete embryological characters as defined in the Standard Event System (Werneburg 2009; https://en.wikipedia.org/wiki/Standard_Event_System). a Common mudpuppy Necturus maculosus (Eycleshymer and Wilson 1910); b, i roe deer Capreolus capreolus (Sakurai 1906); c Triturus vulgaris (Glaesner 1925); d, j Lacerta agilis (Peter 1904); e Sundra slow loris Nycticebus coucang (Hubrecht and Keibel 1907); f South American lungfish Lepidosiren paradoxa (Kerr 1909); g Spiny dogfish Squalus acanthias (Scammon 1911); h goat Capra hircus (Tsukaguchi 1912); k rabbit Oryctolagus cuniculus (Minot and Taylor 1905). Embryos not to scale

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