Creative Commons Licence
Imaging technique: 

Range of developmental stages present in a brood of O. joubini eggs, from freshly laid on left to nearly complete development on the right. Both embryonic reversals are evident in this series. The first egg on the left shows signs of first cleavages on the top end. The next five embryos are in reversed position. Last embryo on right shows second reversal position prior to hatching. This is a very slight variation on image 78.

Maturity: Eggs; Lab or Wild: Lab; Origin: Nw gulf of mexico

John Forsythe
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith