Spengelidae
Family of acorn worms
From Wikipedia, the free encyclopedia
Spengelidae is a family of worms belonging to the class Enteropneusta, order unknown.[2] The larvae of one of its species, Schizocardium californicum, are known for not expressing Hox genes.[3]
| Spengelidae Temporal range: | |
|---|---|
| |
| Adult Schizocardium californicum. (a) Female. (b) Male | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Hemichordata |
| Class: | Enteropneusta |
| Family: | Spengelidae |
| Synonyms | |
|
Spengeliidae | |
Genera:[2]
- Glandiceps Spengel, 1891
- †Mazoglossus Bardack, 1997[1]
- Schizocardium Spengel, 1893
- Spengelia Willey, 1898
- Willeyia Punnett, 1903
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