Normal embryonic stages of Polyodon spathula (Walbaum)
β Scribed by W. W. Ballard; R. G. Needham
- Publisher
- John Wiley and Sons
- Year
- 1964
- Tongue
- English
- Weight
- 929 KB
- Volume
- 114
- Category
- Article
- ISSN
- 0362-2525
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Twentyβthree stages in the embryonic development of the western painted turtle, __Chrysemys picta bellii__ are described. The staging is based primarily on morphological changes, as well as age and size of the embryo.
## Abstract It has been shown that the external parameters of eggs of the garden lizard, __Calotes versicolor__, are not suitable for assessing the exact developmental stages of embryos. In order to make use of this lizard's embryos for experimental work, a series of developmental stages has been c
## Abstract In this work, we have completed a study of the development of the ovoviviparous lizard __Liolaemus tenuis tenuis__. Ovoviviparity in this lizard is a condition in which eggs are retained within the reproductive duct for about 60 days. During this period the phases of segmentation, gastr