Gogia sp.   CLASS - Eocrinoidea ORDER - unnamed FAMILY - Eocrinidae GENUS/SPECIES - Gogia sp. ROCK UNIT - Spence Shale AGE - Middle Cambrian (530 million years old) LOCALITY - High Creek Canyon, Bear River Range, Utah, USA Eocrinoids are among the earliest echinoderms to appear in the fossil record. Although they have the same basic body plan as crinoids (stem, main body portion/thecae & arms), they differ from crinoids by having an irregular arrangement of plates in the theca and pores along plate boundaries. The simple, unbranched arms of Gogia twist away from the body. PRI 42149