Talk:Harvard Collection
From Embryology
24 somites, Johnson, Harvard Collection, Boston. Com- plete description, based on many models and histological study, published in monographic form by Johnson (1917). Rostral and caudal neuropores closed. Otic vesicle retains a narrow opening to surface. Three pharyngeal arches are present. Hepatic trabeculae invading framework of liver. Um- bilical vesicle is compressed rostrocaudally, i.e., early um- bilical stalk. Probably originally 25 somites (Arey, 1938).
