Happy 1st day of July :)
Inspired By the fourth of July, Dino Lord has decsided that he should star this new month with a " Big Bang". So i will be telling you about the next period of the Paleozoic the Ordvician period.
The Ordvician is named after a Celtic tribe called the Ordovices, and was a time that life diversified and specialized. Owing to continental separation, trilobites drifted apart genetically taking on new, location-dependent forms, some quite exotic. The first planktonic graptolites evolved, and other graptolite species became extinct. Most profound perhaps was the colonization of land. Terrestrial arthropod fossils occur in Ordovician strata, as do microfossils of the cells, cuticle, and spores of the early land-based plants.
Ordovician strata are characterized by numerous and diverse trilobites and conodonts (phosphatic fossils with a tooth-like appearance) found in sequences of shale, limestone, dolostone, and sandstone. In addition, blastoids, bryozoans, corals, crinoids, as well as many kinds of brachiopods, snails, clams, and cephalopods appeared for the first time in the geologic record in tropical Ordovician environments. Remains of Ostracoderms (jawless, armored fish) from Ordovician rocks comprise some of the oldest vertebrate fossils.
Inspired By the fourth of July, Dino Lord has decsided that he should star this new month with a " Big Bang". So i will be telling you about the next period of the Paleozoic the Ordvician period.
The Ordvician is named after a Celtic tribe called the Ordovices, and was a time that life diversified and specialized. Owing to continental separation, trilobites drifted apart genetically taking on new, location-dependent forms, some quite exotic. The first planktonic graptolites evolved, and other graptolite species became extinct. Most profound perhaps was the colonization of land. Terrestrial arthropod fossils occur in Ordovician strata, as do microfossils of the cells, cuticle, and spores of the early land-based plants.
Ordovician strata are characterized by numerous and diverse trilobites and conodonts (phosphatic fossils with a tooth-like appearance) found in sequences of shale, limestone, dolostone, and sandstone. In addition, blastoids, bryozoans, corals, crinoids, as well as many kinds of brachiopods, snails, clams, and cephalopods appeared for the first time in the geologic record in tropical Ordovician environments. Remains of Ostracoderms (jawless, armored fish) from Ordovician rocks comprise some of the oldest vertebrate fossils.
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