This series of videos on the development, one each morning this week, were discovered by my BIO101 students.
Wooooooaaaaaahhhhhhh. Beyond awesome. What's the time span on this?
The time post-fertilization at "room temperature":
2-cell: 90 minutes
32-cell: 3 hours
blastula: 4-7 hours
gastrulation begins: 9 hours (hard to see in the video)
the final stage shown looks like about 1.5 day-old tailbud.
Awesome Video! Does anyone know the life expectancy of a xenopus? Mine is at least 23 years old.