File:Britannica 1911 Arthropod blood-sinus and heart development.png
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| Description | Anatomical diagram showing Arthropod blood-sinus and heart development | |||
| Date | published 1893 | |||
| Source | Encyclopædia Britannica (11th ed.), v. 2, 1911, p. 674 | |||
| Author | Edwin Ray Lankester, Q. J. Mic. Sci. vol. xxxiv., 1893 | |||
| Permission (Reusing this file) |
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Caption:
Diagram to show the gradual formation of the Arthropod pericardial blood-sinus and “ostiate” heart by the swelling up (phleboedesis) of the veins entering the dorsal vessel or heart of a Chaetopod-like ancestor. The figure on the left represents the condition in a Chaetopod, that on the right the condition in an Arthropod, the other two are hypothetical intermediate forms.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:03, 12 July 2011 | | 951 × 460 (20 KB) | Bob Burkhardt | {{Information |Description=Anatomical diagram showing Arthropod blood-sinus and heart development |Source=''1911 Encyclopædia Britannica'', v. 2, p. 674 |Date=published 1893 |Author=Lankester, ''Q. J. Mic. Sci.'' vol. xxxiv., 1893 |Permission={{PD-Britan |
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