''Ptychodera'' is a genus of
acorn worm
The acorn worms or Enteropneusta are a Hemichordata, hemichordate class of invertebrates consisting of one order of the same name. The closest non-hemichordate relatives of the Enteropneusta are the echinoderms. There are 111 known species of aco ...
.
Species
* ''Ptychodera bahamensis''
Spengel, 1893
* ''Ptychodera ceylonica''
author unknown
* ''Ptychodera erythrea''
Spengel
* ''Ptychodera flava''
Eschscholtz
Johann Friedrich Gustav von Eschscholtz (1 November 1793 – 7 May 1831)Sterling (1997) was a Baltic German physician, naturalist, and entomologist. He was one of the earliest scientific explorers of the Pacific region, making significant colle ...
, 1825
* ''Ptychodera pelsarti''
Dakin, 1916
References
* http://jcs.biologists.org/cgi/content/abstract/s2-40/157/165
External links
Image
Enteropneusta
{{Hemichordate-stub