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(from greek πρώτο – proto = first + Στόμα – stoma = mouth)
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*’protostomia’ are a clade of animals*
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(together with the ‘deuterostomes’ and ‘xenacoelomorpha’, they make up the ‘Bilateria’, mostly comprising animals with ‘bilateral symmetry’ and three germ layers)
(the major distinctions between deuterostomes and protostomes are found in embryonic development: most (but, confusingly, not all) protostomes undergo ‘Protostomy’, whereas most deuterostomes undergo ‘deuterostomy’)
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(with the ‘deuterostomia’, they make up the clade ‘nephrozoa’)
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*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥🔥