NATURAL HISTORY

Atractosteus spatula Family Lepisosteidae (Lacepéde 1803) The alligator gar has a broad snout, two rows of teeth on the upper jaw and between 59 and 66 laterally compressed rakers. It can be found …

Lepisosteus osseus (Linnaeus 1758) Family Lepisosteidae The longnose gar has a long, narrow snout that is more than twice as long as the rest of the head in adults. It can be found in lakes and the…

1905 - HARD FERN Rippenfarn Blechnum Spicant Roth - Flower Garden - Chromolithograph by Zeyschwitz. Plant. Botany. Natural History.

Ginkgo, Maidenhair Tree (Ginko biloba) 10 Seeds

Photograph-Palm Tree Sago 19C-10"x8" print made in the UK

20x16 Inch (51x41cm) Print - High quality RA4 prints (other products available) - Encyclopedia Britannica 9th Edition Vol II New York, Samuel Hall 1878 - Image supplied by Fine Art Storehouse - Photograph printed in the USA

Life is a struggle for survival. Animals live under constant stress to obtain enough food to eat by being as well adapted to their environments as they can. Animals who are poorly adapted will, in times of hardship, starve, fail to reproduce, and eventually die out completely. Throughout Earth's history, life has constantly been taking new forms which are immediately tested for survival. When the climate or environment changes drastically, many animals who are poorly adapted for their new…

Carbonifère - Vestiges des temps jadis

devonian - Google Search

See photos and illustrations of the Carboniferous period from National Geographic.

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Pikaia swimming in a Cambrian sea, illustration - Stock Image - C035/4161 - Science Photo Library

1897 Carboniferous Landscape Earliest Land by CabinetOfTreasures

stromatilites

It recently came to light that unlike other crinoids, scyphocrinites floated upside down in the water column, using a floating sphere called a lobolith.

Ediacara approx. 550 million years ago Complex life starts to evolve. In the background are some frond-shaped Charnia. Nearby on the left are three Swartpuntia. The three white jellyfish-like organisms on the seafloor are Dickinsonia. On the seafloor are some sea anemone-like nemiana which may have had tentacles for catching food particles. In the foreground is a Kimberella, feeding on the bacterial mats by scratching with its proboscis. Another can be seen further back on the left. At…

There are three main types of rocks: igneous, sedimentary, and metamorphic. Rocks can change from one type to another through a process we call the rock cycle. Rocks are constantly being formed, worn down, and formed again. This process can take a long time - thousands, or even millions of years. NOTE: Our Rio Vista Spelling Bee is tomorrow. Remember to study your words! Today's homework: 1. Math Miss W: p. 333-334. Mr. Spaulding: p. 377-378 2. Fluency "Surviving the Storm." 3. Read for half…

Regional metamorphism covers large areas of continental crust typically associated with mountain ranges, particularly those associated with convergent tectonic plates or the roots of previously eroded mountains.

7,167 Likes, 39 Comments - Geology Page (@geologypage) on Instagram: “Pyroclastic Flows on Ischia | #Geology #GeologyPage Locality: Poseidon's Gardens, near Citara on…”

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Sherpa Guides | Georgia | Coast | Geologic Time Scale

timeline sort activity for life on Earth

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