( ( ( ( ( The Propeamussiidae ) , ) ( sometimes ( referred ( to ( as ( glass ( scallops ( mud ( scallops ( or ( mud pectens ) ) ) ) ) ) ) ) ) ) ) , ) ( ( are ( ( a ( taxonomic family ) ) ( of ( ( ( saltwater clams ) , ) ( ( marine ( bivalve mollusks ) ) ( in ( the ( order Ostreoida ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN Propeamussiidae)) (, ,) (VP (ADVP (RB sometimes)) (VBN referred) (PP (TO to) (SBAR (IN as) (S (NP (NN glass)) (VP (VBZ scallops) (NP (NN mud) (NNS scallops) (CC or) (NN mud) (NNS pectens))))))) (, ,)) (VP (VBP are) (NP (NP (DT a) (JJ taxonomic) (NN family)) (PP (IN of) (NP (NP (NN saltwater) (NNS clams)) (, ,) (NP (NP (JJ marine) (NN bivalve) (NNS mollusks)) (PP (IN in) (NP (DT the) (NN order) (NN Ostreoida)))))))) (. .)))
The Propeamussiidae, sometimes referred to as glass scallops mud scallops or mud pectens, are a taxonomic family of saltwater clams, marine bivalve mollusks in the order Ostreoida.
(ROOT (S (NP (DT A) (NN scallop)) (VP (VBZ is) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN mollusk))) (. .)))