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Burgess Shale chordate

Lateral reconstruction of the primitive chordate, Pikaia gracilens, from the Middle Cambrian Burgess Shale of British Columbia. With the presence of a notochord along its back, this small worm-like precursor to the vertebrates is the earliest known representative of the phylum to which humans belong. The size averages about 4 cm. long.
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Titre:
Burgess Shale chordate
Légende: Voir la traduction automatique
Lateral reconstruction of the primitive chordate, Pikaia gracilens, from the Middle Cambrian Burgess Shale of British Columbia. With the presence of a notochord along its back, this small worm-like precursor to the vertebrates is the earliest known representative of the phylum to which humans belong. The size averages about 4 cm. long.
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Album / Science Source / Chase Studio
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Modèle: Non - Propriété: Non
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Taille de l'image:
5074 x 3127 px | 45.4 MB
Taille d'impression:
43.0 x 26.5 cm | 16.9 x 10.4 in (300 dpi)
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