Ammonites 3

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MS Book and Mineral Company Phylum Mollusca, part 3 Click on specimens to enlarge

	Mollusca 27 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Family Amaltheidae Genus Pleuroceras Hyatt, 1868 Ammonite: Pleuroceras costatus 5 cm Lias, Untershurmig, Germany, Jurassic Half of specimen cut and polished to show internal structure $ 75

	Mollusca 28 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus: Phlyseogrammoceras Ammonite: Pseudogrammoceras latescens 1.5 cm Toarcian, Duex-Serves, France, Jurassic $ 35

	Mollusca 29 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus Phlyseogrammoceras Ammonite: Phlyseogrammoceras dispansum 1.25 cm Toarcian, Cornus, Aveyron, France, Jurassic Specimen replaced with pyrite $ 20

	Mollusca 30 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus Pseudogrammoceras Ammonite: Pseudogrammoceras pachu 2.5 cm Toarcian, Deux-Serres, France, Jurassic Specimen replaced with pyrite; detail on surface shown excellent while under side was partly decayed before replacement could occur SOLD

	Mollusca 31 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus Parawedekindia Ammonite: Parawedekindia arduennensis 2 cm Upper Oxford clay, Warboys, Huntingdonshire, England, late Jurassic Rock matrix is present on innermost coil (on both sides) which could not be removed $ 20

	Mollusca 32 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus Pseudogrammoceras Ammonite: Pseudogrammoceras differens pseudostruckmanni 3.2 cm Toarcian, Thorigne, Deux-Sevres, France, Jurassic $ 60

	Mollusca 33 Phylum Mollusca Class Bivalvia Order Carditoida Genus Crassatelites Bivalve: Crassatelites vadosus Coon Creek Tongue, Ripley Fm., McNairy Co., Tennessee, late Cretaceous single shell (4 x 5.5 cm) on rock matrix $ 14

	Mollusca 34 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Order Ammonitida Family Dactylioceratidae Genus: Dactylioceras Hyatt, 1867 Ammonite: Dactylioceras 7 cm Yorkshire, Great Britain lower Jurassic one section sliced and polished $ 32

	Mollusca 35 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Order Ammonitida Family Hildoceratidae Genus: Grammoceras Hyatt, 1867 Ammonite: Grammoceras soemani 5 cm LeClapier, Aveyron, France, Jurassic This is a genus where the suture lines are difficult to see without magnification $ 95

	Mollusca 36 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus Cosmoceras Ammonite: Cosmoceras duncani spinosus 3.5 cm Oxford Clay, North Hampstonshire, England, Jurassic Sutures are visible on this specimen, but are easy to locate with proper lighting; good preservation $ 100

	Mollusca 37 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Order Goniatitida Genus: Goniatites De Haan, 1825 Ammonite: Goniatites americanus 1.75 cm Delaware Creek Mbr., Caney Shale Fm, Clarita, Coal Co., Oklahoma, late Mississippian Specimen has a ball shape; sits on rock matrix of the Caney Shale Formation $ 80

	Mollusca 38 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus Cosmoceras Ammonite: Cosmoceras aculeatum 2.5 cm Rjazan region, Michailow, Russia This cephalopod with minerals giving a shiller effect to shell (red to green-blue) colors $ 125

	Mollusca 39 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Order Ammonitida Genus: Hildoceras Hyatt, 1876 Ammonite: Hildoceras bifrons 2.75 x 3.5 cm Toarcian, LeClapier, Aveyron, France, Jurassic This is another ammonite replaced by pyrite; it has good suture preservation SOLD

	Mollusca 40 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus Holcophylloceras Ammonite: Holcophylloceras nillsoni 2.5 cm Toarcian, LeClapier, France, Jurassic Specimen is pyrite replaced with small gaps between adjacent segments giving an exellent view of suture structure $ 125

	Mollusca 41 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Order Ammonitida Family Craspeditidae Genus: Craspedites Pavlow, 1892 Ammonite: Craspedites mosquensis large specimen 3.4 x 3.4 cm small one 2.3 x 2.3 cm Saratow, Russia, late Jurassic (late Volgian) two ammonites on matrix both covered with a highly reflective blue nacreous material; both ammonites are decisively round in shape SOLD

	Mollusca 42 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Order Goniatitida Genus Eothinites Ammonite: Eothinites autubensis 3 x 3.5 cm Artinskian, South Ural Mnts., Russia, Permian The ammonites outer shell covering was not completely preserved on outer whorl; exposed layer still very interesting as suture lines are still visible especially on top edge near where the surface is less preserved $ 50

	Mollusca 43 Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Genus Costilioceras Ammonite: Costilioceras holzapfeli 1.85 cm Aveyron, France, Toarcian, Jurassic Specimen is pyrite replaced; note the color shown is actual with a reddish tone $ 45

	Mollusca 44 Phylum: Mollusca Class: Cephalopoda Subclass: Ammonoidea Genus: Osperlioceras Ammonite: Osperlioceras bicarinatus right: small, young specimen: 1.5 x 2 cm $ 20 left: larger specimen: 1.7 x 2.3 cm $ 50 Cornus, Aveyron, France, Jurassic (Toarcian) Both specimens are pyrite replaced


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