---
title: "1 Development Vertebrate Quotes by 1 author"
description: "Browse 1 Development Vertebrate quotes by 1 author. Discover the best Development Vertebrate sayings and thoughts."
image: "https://sms4smile.com/quotes/i/bd5/karl-ernst-von-baer-61894_axes_the-development-of-the-vertebrate-procee_470676.png"
---

> [The development of the Vertebrate proceeds from an axis upward, in two layers, which coalesce at the edges, and also downward, in two layers, which likewise coalesce at the edges. Thus two main tubes are formed, one above the other.…](https://sms4smile.com/quotes/karl-ernst-von-baer/the-development-of-the-vertebrate-proceeds-from-an-axis-upward-in-two/)

[Karl Ernst von Baer](https://sms4smile.com/quotes/author/karl-ernst-von-baer/)

[Image](https://sms4smile.com/quotes/i/bd5/karl-ernst-von-baer-61894_axes_the-development-of-the-vertebrate-procee_470676.png)

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