Just looked it up on Wiki:
Neck amphorae were commonly used in the early history of ancient Greece, but were gradually replaced by the one-piece type from around the 7th century BC onward. Most were produced with a pointed base to allow upright storage by embedding in soft ground, such as sand.
Amphora - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/AmphoraWikipedia
An ancient shipwreck was discovered in the harbor of Starigrad, Croatia (ancient Pharos or Pharia). The archaeological museum in Starigrad has an exhibit where they show what the wreck looked like when it was discovered--hundreds of amphoras side by side. I think it is from the Roman period (it was originally a Greek colony founded in 384 B.C.).