'Devonian' presentation slideshows

Presented by: Dick Drozd Email: Dick.Drozd@WeatherfordLabs

Source Rock Geochemistry and Thermal Maturity Discussion of the Utica-Point Pleasant in the Northern Appalachian Basin. Presented by: Dick Drozd Email: Dick.Drozd@WeatherfordLabs.com. Presentation Outline. What are the important elements of a geochemical evaluation and why.

1.26k views • 40 slides

Discovering Devonian Microfossils

ABLE 2005. Discovering Devonian Microfossils. Charlie Drewes Ecology, Evolution & Organismal Biology Iowa State University, Ames IA. What are microfossils?. ? fossilized remains (plant, animal, protozoan) ? derive from hard parts (exoskeleton, endoskeleton, covering, shell, teeth)

383 views • 30 slides

The Devonian of New York

515 views • 29 slides

512 views • 26 slides

Invasion of the Land by Tetrapods

Invasion of the Land by Tetrapods. Crossopterygians - Lobe-Finned Fishes. Crossopterygians first arose in the Lower Devonian (360-408 mya) and became the dominant freshwater predators during the Late Paleozoic.

463 views • 21 slides

Clubmoss ( Lycopodium )

LYCOPHYTES: SPOROPHYTES. Clubmoss ( Lycopodium ). Quillwort ( Isoetes ). Spikemoss ( Selaginella ). LYCOPHYTES: LEAVES ( Ligule ). Quillwort ( Isoetes ). Clubmoss ( Lycopodium ). Spikemoss ( Selaginella ). LYCOPHYTES: VASCULAR TISSUE ( Tracheids , Sieve Elements ). Tracheids.

2.29k views • 15 slides

The Devonian Period

1.86k views • 12 slides

Gnathostomes- "Jawed Fishes"

Gnathostomes- "Jawed Fishes". Appearance of Jaws- Silurian (410-430 million years ago); before agnathan radiation value of jaws: greater feeding opportunities- new types of food; mechanical digestion defense manipulate objects. origin of jaws.

877 views • 8 slides