scorpions

• first air-breathing animal

59:3.11To­ward the close of the fi­nal Sil­urian sub­mer­gence there is a great in­crease in the echin­o­derms—the stone lilies—as is ev­i­denced by the crinoid lime­stone de­posits. The trilo­bites have nearly dis­ap­peared, and the mol­lusks con­tinue monar­chs of the seas; coral-reef for­ma­tion in­creases greatly. Dur­ing this age, in the more fa­vor­able lo­ca­tions the prim­i­tive wa­ter scor­pi­ons first evolve. Soon there­after, and sud­denly, the true scor­pi­ons—ac­tual air breathers—make their ap­pear­ance.

• scorpions

59:5.6From the briny wa­ters of the seas there crawled out upon the land snails, scor­pi­ons, and frogs. To­day frogs still lay their eggs in wa­ter, and their young first ex­ist as lit­tle fishes, tad­poles. This pe­riod could well be known as the age of frogs.

• scorpions

59:5.7Very soon there­after the in­sects first ap­peared and, to­gether with spi­ders, scor­pi­ons, cock­roaches, crick­ets, and lo­custs, soon over­spread the con­ti­nents of the world. Dragon flies mea­sured thirty inches across. One thou­sand species of cock­roaches de­vel­oped, and some grew to be four inches long.