Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
First polypicle dev. from transverse
septum.
[illegible]
frontal
epithel.
perit.
basal wall.
interactn + attractio
of cells incl. bodywall
to give rise to
fentacular sheath
rosette plate
Morphogen. movement must be completed
before calcif. begins.
retractor muscle comes from
peritoneum
new polypide
wall peritonealcells
polypicle peritoneal
cells.