Petr Hykš:
Spirograptus spiralis (as found)
Petr Hykš:
Spirograptus spiralis graptolite (micro-capture panorama, 30x)
Petr Hykš:
Spirograptus spiralis (micro-capture panorama, 30x)
Petr Hykš:
Spirograptus spiralis graptolite (micro-capture, 30x)
Petr Hykš:
Spirograptus spiralis graptolite (micro-capture panorama, 30x)
Petr Hykš:
Spirograptus spiralis graptolite (micro-capture panorama, 30x)
Petr Hykš:
Monograptus sp. graptolite (micro-capture panorama, 30x)
Petr Hykš:
Graptolite slate
Petr Hykš:
Spirograptus spiralis graptolites
Petr Hykš:
Graptolite slate
Petr Hykš:
Monograptus sp. graptolite
Petr Hykš:
Spirograptus spiralis graptolites (detail)
Petr Hykš:
Spirograptus spiralis graptolites (detail)
Petr Hykš:
Spirograptus spiralis graptolites (detail)
Petr Hykš:
Spirograptus spiralis graptolite
Petr Hykš:
Spirograptus spiralis graptolites (as found)