Goniatids, informally Goniatites, are ammonoid cephalopods that existed from the middle Devonian period up to the end of the Permian, facing extinction just one era before early dinosaurs began to appear in the late Triassic period.
All goniatites possessed an external shell, which is divided internally into chambers filled with gas giving it buoyancy during the life of the animal. An open chamber at the front of the shell provided living space for the goniatitid animal, with access to open water through an aperture. The general morphology and habit of goniatites was probably similar to that of their later relatives the ammonites, being free swimming and possessing a head with two well developed eyes and arms (or tentacles).
They occur most often in inland seas, which had the correct level of salinity in the water for them to survive. Fossils can be found on practically every continent. However, they seem to occur mostly in areas which at the time would have been tropical to subtropical.
This authentic goniatite fossil makes a great addition to any fossil/rock/mineral collection, and looks great in the classroom. Have students pass it around and study its markings, and maybe draw what they imagine the creature might look like. Also makes an inexpensive, gift, stocking stuffer, or fun and unique party favor!
Durable, anti-fog safety glasses that fit comfortably on any head size.
These goggles meet the ANSI Z87.1, 2010 High Impact standards.
This set includes two (2) N95 NIOSH approved respirators.
These goggles meet the American National Standards Institution (ANSI Z87.1) and Canadian Standards (CSA Z94.3) regulations.
Recommended for protection against chemical splashes. A must have for every young chemist!
Highly durable lab apron made of rubberized cloth is impermeable and easy to clean, perfect for all manner of lab or classroom experiments
This microscope is so versatile you can even take it with you on a job site!
This classic device is used to demonstrate the conservation of mechanical energy.
This smaller transportable Van de Graaff Generator will easily fit in any classroom!
Learn about detective science through this fun fingerprinting kit!
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Build a model green house and 9 other green energy-related devices with this great kit!
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