Figure 3: Stratigraphic distribution of early to middle Cambrian echinoderms. | Nature Communications

Figure 3: Stratigraphic distribution of early to middle Cambrian echinoderms.

From: The oldest echinoderm faunas from Gondwana show that echinoderm body plan diversification was rapid

Figure 3

Summary of the stratigraphic distribution of echinoderm fossils based on articulated specimens found in Laurentia (North America) and western Gondwana (France, Spain and Morocco). Strata with main fossil echinoderm faunas are numbered and are as follows: (1) Poleta Formation; (2) Latham Shale Formation; (3) Kinzers Formation; (4) Various Drumian-aged formations, including the Marjum Formation, and Burgess Shale Formation; (5) Issafen Formation; (6) Jbel Wawrmast Formation (Brèche à Micmacca Member); (7) Jbel Wawrmast Formation (Tarhoucht Member 1); (8) Jbel Wawrmast Formation (Tarhoucht Member 2); (9) ‘Alanís beds’; (10) Genestosa Member (Oville Formation) and Murero Formation (part); (11) Murero Formation (part) and Borobia Formation. Circles indicate genera from North America and stars indicate genera from West Gondwana. Coloured stars are new records from Morocco. Correlation between West Gondwana and North America follows Gradstein et al.48

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