Antique engraved illustration of the fossilized foraminiferas. Vintage illustration of the fossilized foraminiferas. Old picture. Book illustration published 1907. Foraminifera are amoeba-like, single-celled protists (very simple micro-organisms). They have been called armoured amoebae because they secrete a tiny shell (or test ) usually between about a half and one millimetre long. They get their name from the foramen, an opening or tube that interconnects all the chambers of the test. Fossilised tests are found in sediments as old as the earliest Cambrian (about 545 million years ago) and foraminifera can still be found in abundance today, living in marine and brackish waters.
圖片編號:
262182057
拍攝者:
Romannerud
點數下載
授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
---|---|---|---|---|---|
標準授權 | XS | 480 x 457 | JPG | 13 | |
標準授權 | S | 800 x 761 | JPG | 15 | |
標準授權 | M | 1775 x 1689 | JPG | 18 | |
標準授權 | L | 2620 x 2492 | JPG | 20 | |
標準授權 | XL | 2900 x 2758 | JPG | 22 | |
標準授權 | MAX | 3551 x 3378 | JPG | 23 | |
標準授權 | TIFF | 3705 x 3524 | TIF | 39 | |
進階授權 | WEL | 3551 x 3378 | JPG | 88 | |
進階授權 | PEL | 3551 x 3378 | JPG | 88 | |
進階授權 | UEL | 3551 x 3378 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 480 x 457 px | JPG | 13 點 |
標準授權 | 800 x 761 px | JPG | 15 點 |
標準授權 | 1775 x 1689 px | JPG | 18 點 |
標準授權 | 2620 x 2492 px | JPG | 20 點 |
標準授權 | 2900 x 2758 px | JPG | 22 點 |
標準授權 | 3551 x 3378 px | JPG | 23 點 |
標準授權 | 3705 x 3524 px | TIF | 39 點 |
進階授權 | 3551 x 3378 px | JPG | 88 點 |
進階授權 | 3551 x 3378 px | JPG | 88 點 |
進階授權 | 3551 x 3378 px | JPG | 88 點 |