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Amateur geology or rock collecting (also referred to as rockhounding in the United States and Canada) is the non-professional study and hobby of collecting rocks and minerals or fossil specimens from the natural environment. [1] [2] In Australia, New Zealand and Cornwall, the amateur geologists call this activity fossicking. [3]
This bony skull--one of the earliest in the fossil record--is made entirely of little teeth. Teeth originally arose to bite creatures (see Conodonts); later a version of teeth was used in a new way to protect them." [4] Ostracoderms existed in two major groups, the more primitive heterostracans and the cephalaspids. The cephalaspids were more ...
Multiple phylogenetic analysis were run under different conditions, both using equal and implied weighting of the characters. Several of the analysis were run with the constraint of forcing Enalioetes into one of several groups (specifically the genus Cricosaurus, a clade of unnamed rhacheosaurins and the group formed by Enaliosuchus & Neustosaurus), which were in turn compared to the results ...
Drywall screws designated as fine are the most common screws to use the twinfast style of threads. [5] wood screw: A metal screw with a sharp point designed to attach two pieces of wood together. Wood screws are commonly available with flat, pan, or oval-heads. A wood screw generally has a partially unthreaded shank below the head.
Turnersuchus is an extinct genus of thalattosuchian, a group of marine crocodylomorphs, from the Pliensbachian of the United Kingdom.It is the oldest diagnostic member of Thalattosuchia and was also found to be the group's most basal member, being situated outside the two major groups Metriorhynchoidea and Teleosauroidea.
On 23 December 2004 an earthquake measuring 8.1 on the Richter magnitude scale (one of the largest earthquakes ever recorded) rocked the island, but caused little damage. [19] The last major earthquake in Tasmania was between magnitude 6.5 and 7 at the Lake Edgar Fault in the Recent Period, but more than 200 years ago.
Collecting as a hobby can become hoarding or compulsive hoarding, differing in that covering a large amount of living area with possessions leads to significant distress or impairment. [10] Compulsive hoarding, also known as hoarding disorder, is a diagnosable mental disorder in the DSM-5 and is closely related to obsessive-compulsive disorder ...
Thalattosauria (Greek for "sea lizards") is an extinct order of marine reptiles that lived in the Middle to Late Triassic.Thalattosaurs were diverse in size and shape, and are divided into two superfamilies: Askeptosauroidea and Thalattosauroidea.