Hemicyclaspis is an ostracoderm from the Early Devonian of England.

ANIMAL THEMES • ANIMAL • AQUATIC • ARMORED FISH • ARTWORK • BIZARRE • BOTTOM DWELLERS • BOTTOM FEEDERS • CEPHALASPID • COLOR IMAGE • COLOUR IMAGE • CREATURE • DETRITIVORE • DEVONIAN • DIGITAL COMPOSITE • DIGITALLY GENERATED IMAGE • EVOLUTION • EXTINCT • FISH • FULL LENGTH • FULL-LENGTH • HEMICYCLASPIS MURCHISONI • HEMICYCLASPIS • HORIZONTAL • ILLUSTRATION • ILLUSTRATIONS • LATERAL VIEW • MARINE BIOLOGY • MIXED MEDIA • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NO PEOPLE • OCEAN FLOOR • ONE ANIMAL • OSTEOSTRACI • OSTRACODERM • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOBIOLOGY • PALEOICHTHYOLOGY • PALEONTOLOGY • PALEOZOIC ERA • PALEOZOOLOGY • PAST • PREHISTORIC ERA • PRIMEVAL • PRIMITIVE • PRIMORDIAL • SAND • SCAVENGER • SCIENCE • SCIENCE: EVOLUTION • SEA LIFE • SEABED • SIDE VIEW • SILURIAN • SPECIES • SWIMMING • UGLINESS • UNDERWATER • VIGNETTE • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY