Peat Burns Posted October 20, 2017 Share Posted October 20, 2017 Here are a few pictures of late-Pleistocene and Holocene macrofossils recovered from lake and wetland deposits in the southern Great Lakes Region (sorry, not all photos have scales for size). Hoping that @Doctor Mud will add a few from his investigations in New Zealand. Ceratophyllum demersum (hornwort) achene Myriophyllum exalbescens (milfoil) turion in silt Ephippium of a cladoceran (water flea) Achene of Potamogeton (pondweed) Picea (spruce) body fossil with Castor canadensis (beaver) gnawing (ichnofossil) and beetle borings (ichnofossil) Planorbella campanulata (snail) Perca flavescens (yellow perch) scale And just in time for Thanksgiving... Oxycoccos macrocarpon (cranberry) fruit 2 Link to comment Share on other sites More sharing options...
doushantuo Posted October 20, 2017 Share Posted October 20, 2017 Great post,pretty awesome photography! Link to comment Share on other sites More sharing options...
Fossildude19 Posted October 20, 2017 Share Posted October 20, 2017 Interesting and informative post! Great pictures. Thanks for posting it. Although I may have to disagree with your ID of Ephippium of a cladoceran (water flea). Sure looks like an alien skull, to me. Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Peat Burns Posted October 20, 2017 Author Share Posted October 20, 2017 11 hours ago, doushantuo said: Great post,pretty awesome photography! Thanks Doushantuo. 6 hours ago, Fossildude19 said: Interesting and informative post! Great pictures. Thanks for posting it. Although I may have to disagree with your ID of Ephippium of a cladoceran (water flea). Sure looks like an alien skull, to me. Hahaha. Very clever. I am very embarrassed to say that I spent a couple hours flipping through seed identification manuals trying to identify that as a plant seed. Sad part is that I deal with living cladocerans all the time, but I just had plant seeds on my mind I guess. I'll never make that mistake again. Link to comment Share on other sites More sharing options...
Peat Burns Posted October 25, 2017 Author Share Posted October 25, 2017 Dr. Peat calling @Doctor Mud... This thread was your idea! Where's the New Zealand goodies? Link to comment Share on other sites More sharing options...
Nimravis Posted October 26, 2017 Share Posted October 26, 2017 Great Post, love the Perch scale. Link to comment Share on other sites More sharing options...
Plax Posted October 26, 2017 Share Posted October 26, 2017 here's an example form New Jersey pleistocene algae.pdf Link to comment Share on other sites More sharing options...
Doctor Mud Posted November 4, 2017 Share Posted November 4, 2017 On 26/10/2017 at 7:25 AM, Peat Burns said: Dr. Peat calling @Doctor Mud... This thread was your idea! Where's the New Zealand goodies? I'll be along with some much better examples than my first post - not hard interesting back story not much to look at! For now we don't have a camera hooked up to the scope, but not bad for my iPhone held up to the eye piece. This is a purse caddis fly larval case with the chitinous exoskeleton still preserved inside. Paroxyethira. I don't know if the emergence process of caddis flies leaves the larval parts behind or if this is a death assemblage. These guys apparently loved deforestation by humans in New Zealand as they are very abundant in shallow lakes after burning that occurred since about 1300 AD by the first humans to arrive (Maori). They live on aquatic plants and eat the algae that grows on the plants. Delicious! There are hundreds of these cases in post clearance sediments. And they are very rare beforehand. This is 4 mm long. Link to comment Share on other sites More sharing options...
old bones Posted November 4, 2017 Share Posted November 4, 2017 These are great! I love the beaver gnawed spruce...and the details on the yellow perch (yum) scale. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now