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So much for that theory
From tip to tip
aka Podopteryx
Pikaia is not a technically considered a vertebrate - no you can say if this particular creature is our direct predecessor
The land areas were covered by forests of conifers
Terataspis grandis (giant trilobite) (Replica) Deinonychus So much for that theoryAge: Middle Devonian Location: Erie County, New York Formation: Williamsville Quarry, Onadaga Limestone This species of trilobite has been known by Paleontologists and collectors alike for many years. There has never been a complete specimen found. However many segments of this trilobite have been found and based on those fossils a reconstruction as you see here has been done by Mr. George Rennie of Ct. under the guidance and research by Dr. Copeland