fossilized crushing tooth plates of the chondrichthyan cochliodus contortus found in british limestone - detailed view of fossilized dental elements from an extinct group of cartilaginous fish - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
diverse colonial and solitary coral structures from the carboniferous limestone of britain and belgium - several genera of fossilized corals, showcasing both colonial growth habits and solitary forms - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
morphological perspectives and plate arrangement of pentremites from the carboniferous - three views of the "calyx" or body of a blastoid, an extinct type of stemmed echinoderm - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
skeletal plate organization and microscopic details of palaechinus ellipticus from the carboniferous -three detailed views of an ancient sea-urchin - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
phlegethontia is a lepospondyl from the late carboniferous period of czech republic. - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
hard coal formation fossil , cardiocarpus cordai, a fossilized seed from the ancient cordaitales order, not a genus named cyclocarpus - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
stratigraphic column showing the sequence of permian sedimentary formations in northern england - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
slab of crinoidal marble from the carboniferous limestone of dent in yorkshire showing varying sections of crinoid columns - 石炭紀 幅插畫檔、美工圖案、卡通及圖標化石, 海百合類
morphological architecture and armored exoskeleton of prestwichia rotundata from the british coal-measures - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
hard coal formation fossil ,spirifer hystericus. a) opened, with coiled brachial skeleton. - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
hard coal formation fossil ,sphenopteris obtusiloba fossil is the remains of an extinct seed fern from the carboniferous period, specifically the westphalian age (middle pennsylvanian), dating back approximately 306 to 308 million years ago - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
a sphenophyllum schlotheimi fossil is the impression or compression fossil of the leaves and stems of an extinct plant, the sphenophyllum genus, known for its whorled, triangular leaves - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
hard coal formation fossil ,odontopteris schlotheimii is a fossil fern frond from the medullosales order, also known as the medullosan ferns - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
hard coal formation fossil ,sigillaria was a genus of extinct, spore-bearing, arborescent (tree-like) lycophytes that lived during the carboniferous and permian periods - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
alethopteris serli fossil is the preserved remains of a seed fern, a type of extinct plant that lived during the carboniferous period, about 320 to 300 million years agohard coal formation fossil , - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
a pecopteris dentata is a fossilized frond (leaf) of a seed fern tree that lived from the carboniferous to the permian periods (roughly 359 to 251 million years ago) - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
diagram of the succession of stratified rocks showing the primary geological eras and periods from laurentian to recent - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
the tertiary formation is famously known for its fossils, which document the explosive diversification of life following the extinction of the dinosaurs. - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
hard coal formation fossil ,cordaianthus, a fossil genus, consists of reproductive structures (strobili) from extinct plants of the cordaitaceae family - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
surface ornamentation and leaf scar arrangement of sigillaria graeseri from the european carboniferous - two views of the fossilized bark from a giant lycopod - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
cranial and dental anatomy of a predatory tetrapod from the northumberland coal measures - technical study of fossilized remains from anthracosaurus russelli, a large labyrinthodont amphibian - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
anatomical reconstruction and reproductive structures of lepidodendron sternbergii from the european carboniferous - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
skeletal reconstruction of a primitive aquatic reptile showing the vertebral column and limb structure - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
morphology and venation of odontopteris schlotheimii from the carboniferous - fossilized fern frond recovered from carboniferous strata - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
morphological study of fossilized walchia piniformis foliage from the permian of saxony - fossilized remains of an early coniferous plant - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
fossilized wing structure of haplophlebium barnesi from the nova scotia coal-measures - delicate wing of an ancient insect - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
cordaites prehistoric plant from the carboniferous period, isolated on white background. - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
microscopic view of shells in a transparent slice of carboniferous limestone from indiana - 石炭紀 幅插畫檔、美工圖案、卡通及圖標
