When you see a plate with many specimens of trilobites on, then there is a good chance it is a fake, as these “large pieces” are not found very often. Click on the link in the row that best matches your tooth. I'm just starting out and this reference is a good place to start: ARAMBOURG, C. (1952) Again–just curious. ... Otodus Shark Teeth. Les Orectolobiformes, Carcharhiniformes et Myliobatiformes (Elasmobranchii, Neoselachii) des Bassins a phosphate du Maroc (Maastrichtien-Lutetien basal): Systematique, biostratigraphie, evolution et dynamique des faunes. It is understandable why trilobites are commonly faked; it takes about 5 hours to produce a fake specimen, while preparing a real trilobite to a good standard will take around 100 hours. While fake trilobites are much softer as they are made with resin or plaster. However, I have a great collection from the Venice area. If not I would sure appreciate contributions of references for shark teeth for this locality. To spot them, you should look for air bubbles as with trilobites, detailed textures and patterns in the shell, from growth. Just got back from a weekend stay at our beach here in South Carolina (Myrtle), and we found 452 teeth in that short of a time,along with fossils. And good luck Bonnie ( i love those Bittersweets! evolution within a single world-wide species. Is it possible to find these teeth here since the shark’s natural range India and China and the Western regions of Australia.
This does not mean that you cannot find any real death assemblages as they do come up every so often, but it is not very natural to get several different species living together. Shark teeth from this location are a creamy white to … After some time we could organise references into something that makes sense taxonomically and if there is a demand for it maybe pin it. The Fossil Forum in height; coarse serrations, thick root, 11b) teeth 1″ or less in height; basal margin of enamel of lingual face is root not massive, 12a) one cutting edge of tooth with angular notch, 12b) both cutting edges of tooth with angular notches, 14a) enamel shoulder with faint to coarse serrations, 17a) number of lateral cusplets on each side of crown equal, 17b) number of lateral cusplets on each side of crown unequal, 18a) lateral cusplets adjacent to basal edge of crown; cutting edge of crown complete, 18b) lateral cusplets well above basal margin of crown; cutting edge of crown incomplete, 19a) transverse groove absent; cutting edges usually straight and never parallel toward apex, 19b) transverse groove present; cutting edges usually concave and in more anterior teeth nearly parallel toward apex, 20a) root protrudes on lingual side; central foramen in shallow groove, 20b) root does not protrude on lingual side; central foramen in deep transverse groove, 21a) cutting edge extends to base of crown, 21b) cutting edge does not extend to base of crown, 22b) transverse groove absent or incipient, 23a) asymmetrical teeth; transverse groove does not extend to basal margin of root, 23b) nearly symmetrical teeth; transverse groove extends to basal margin of root to form a notch, 26a) mesial edge of main cusp serrated, cusplets decline regularly in size distally, 26b) mesial edge of main cusp with one or more denticles, cusplet distal to main cusp shorter than more distal cusplets, 27a) 3 to 4 cusplets, serrations recurved, 27b) 7 to 10 cusplets, serrations not recurved, 28a) central foramen present; lingual face of root smooth, 28b) central foramen absent; lingual face of root striated, 29a) cutting edges of crown smooth; enamel shoulders weakly to finely serrated, 29b) cutting edges of crown partially or completely serrated, 32a) root lobes round and extend beyond basal limit of crown, 32b) root lobes not round (in teeth under 1.5″ in height) and don’t extend noticeably beyond basal limit of crown, 33a) lateral cusplets prominent, not strongly curved, 33b) lateral cusplets not prominent, strongly curved, 34a) two or more pairs of lateral cusplets, root lobes deeply arched and narrow, 34b) one pair of long lateral cusplets, root lobes moderately arched and broad, 36a) mesial cutting edge concave with slightly coarser serrations on both shoulders, 36b) mesial and distal cutting edges of cusps essentially straight, 37a) cusps with slightly coarser serrations distally, 38a) mesial cutting edge marked by noticeable gap in serrations, 38b) mesial cutting edge not marked by noticeable gap in serrations, 40a) cusps uniformly serrated with fine serrations, 41a) saw-toothed serrations on distal enamel shoulder, 41b) fine serrations on distal enamel shoulder, 43a) contact between root and labial side of crown V-shaped, 43b) contact between root and labial side of crown flat and wide, 44a) mesial cutting edge essentially straight, 44b) mesial cutting edge noticeably concave basally, 45a) transverse groove present in lingual root protrusion, 45b) transverse groove absent in lingual root protrusion; teeth greater than 1″ (2.54 cm); basal margin of enamel of lingual face is gently arched to straight in small teeth and becoming strongly arched in larger specimens, 46b) basal margin of root not broadly arched, 47a) mesial cutting edge forms shoulder with one or more cusplets, 47b) mesial cutting edge without shoulder and cusplets, 48b) small center cusp with 3-4 cusplets on either side.
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