Assertion: eurypterid | /r/HasProperty | sister group
Facets:
value: to arachnida
type: LOCATION
value: to the chasmataspids
type: TRANSITIVE-OBJECT
value: with these two groups
type: OTHER
Source sentences:
text: Another suggested the eurypterids were sister group to the chasmataspids, with these two groups in turn sister group to the horseshoe crabs.
text: It is now believed that eurypterids are a sister group to Arachnida, closer to scorpions and spiders than to horseshoe crabs.