Saccoglossus+kowalevskii

=__//Saccolossus kawalevskii//__= __Scientific Name:__ //Saccolossus kawalevskii// //-// no common name


 * Class:** Enteropnesta


 * Phylum:** Hemichordata


 * Location:** Eastern US & Europe


 * Size:** 10–15 cm


 * Habitat:** live in sitly- sand, low energy,


 * Living requirements**: High concentrations areas of organic material.


 * Life cycle:** The first part occurs from the animal to the vegetal pole. Then second to reach the embryos four cell stage Then thrid cleavage occurs first in the animal cells and then in the vegetal cells to give a 32 cell blastomere. The fourth stage occurs in a similar order and completes a 64 cell stage, finally the seventh cleavage marks the end of the cleavage stage with a blastula with 128 blastomeres. This structure goes on to go thru gastrulation movements which will determine the body plan of the resulting gill slit larva, this larva will ultimately give rise to the marine acorn worm.


 * Male and Female Differences:** Sexual organ differences.


 * Endangered:** None.

They are divided into three parts, proboscis, collar and trunk.
 * Facts:**
 * The gut is very poorly developed, and food is mostly transported through it by using the cilia.




 * Zookeeper Heath Mcgregor References**


 * Info:** []


 * Picutres:** amnh.org


 * Video:** []