In contrast to the Tetrapoda, the genomes of bony fishes (Teleostei) typically encode twice the number of paralogs (20-26) compared to the retained number of subfamilies (11-12), while the holostean spotted gar (Lepisosteas oculatus) has 13 paralogs spread amongst 11 subfamilies.
Over most of its extent at Wasson Bluff, the Scots Bay member has a single bed of purple green and white limestone and calcareous sandy mudstone that contains disarticulated remains of the holostean fish Semionotus and unidentified palaeonisciforms, teeth of hybodont sharks, and coprolites.