in the Geol. Mag. Decade II. Vol. VII. p. 247. 



THE WHOLE OF THE LoWER OoLITBS. 



147 



LiTHOLOGY — Remarks. 



Some of the Characteristic Fossils. 



1. Hard blue calcareous grits 

 — quarried for road metal — alter- 

 nating with 



2. Yellowish calcareous sand- 

 rock, often full of small cavities 

 — building: stone. 



Grey sandy shales and clays, 

 becoming bluer and less sandy 

 below. 



The fossil beds, though only 

 a few feet thick, are varied in 

 their lithology. Reddish -yellow 

 or chocolate grits with spathose 

 shells and large ova* blue-grey 

 and very sandy Calcareous Grits. 



Brownish- yellow sandstones in 

 the mass, quarried for building at 

 Hackness. 



Blue shales passing upwards 

 into yellow sandy mudstones. 



Impure Limestone, grey and 

 rubbly, partially ooKtic, and 

 sometimes stained reddish. 



False-bedded Sands and Clays. 



1. Blue and grey impure Lime- 

 stones, shales, mudstones and iron- 

 stones, never oolitic. Roadstone, 

 rough masonry (Scarboro' Pier). 



2. Siliceous "potlid" Lime- 

 stones. 



Sandstones and Shales, contains the 

 main seams of moorland coal. 



1. At Sycarham a ferruginous 

 grit, and sometimes a gritty irony 

 Hme rock with " Kaolinite." 



2. Fawn-coloured sandy Lime- 

 stone and Oolite, lower beds 

 blue- centred. 



Sandstones, often massive, and Shales. 

 Building stones in Eskdale. 



Aienaceous ironstone, in parts 

 oolitic, resting on yellow and 

 grey micaceous sands at Blue 

 "Wyke Point. 



Bel. abbreviatm, Mill. Am. perarmatus, Sow. 

 Am. cordatus and vertebralis. Sow. Am. convo- 

 luUis, Quens. Am. canaliculaius, Miinst. Gryphcea 

 dilatata and Pinna lanceolata, Sow. Modiola blpar- 

 tita, Sow. Astropecten rectus, M'Coy. Rhynch. 

 Thiirmanni, Voltz. 



Upper — Am. perarmatus, rarely. 



Middle — Small Ammonites, young of A. Eugenii, 

 Rasp., A. crenatus, Brug., etc. 



Lower — Bel. Owenh, Pratt. Am. Lamberti, 

 Sow. Am. athleta, Phil. Am. oculatus, Phil. Am. 

 crenatus, Brug. 



Varieties of A. cordatus throuffhout. 



Bel.Owenii,YSbr. tornatilis, Fhil. Am. Jason, Rein. 

 Am. Duncani, Sow., and var. gemmatus, Phil. — the 

 ornati. Am. athleta, Phil. Am. hecticus, and lunula, 

 Rein. Am. Chamusseti, D'Orb. Am. Gowerianus, 

 Sow. Am. Kc&idgi, Sow. Am. modiolaris, Luid. 

 Am. macrocfphnlus, Schlot. var. rugosus, Leek. 

 Giyphma, var. of dilatata. Sow. Trig, paueicosta. 

 Lye. Anatina undulata, Sow. Wald. umbonella. 

 Lam. (near to ornithocephaln, Sow.). 



Am. Herveyi, Sow. [macrooephatus, Schlot.), the 

 only cephalopod. Lim.a rigidula, Phil. Avieida 

 echinata. Sow. Trig. Scarburgei/sis, Lye. Trig, 

 elongata, Sow. Trig. Cassiope, D'Orb. Waldheimia 

 ohovata. Sow., IV. lagenalis, Schlot. Rhynch. 

 Leedsii, "Walk. (? concinna). Hchinobrissus orbicu- 

 laris,. Phil. 



Anodon. sp. A few plant remains. 



1. Bel. giganteus, Schlot. Am. Humphresianus, 

 Sow. Am. Blagdeni, Sow. Avicula Bramburi- 

 ensis, Phil. Pteroperna plana, M. and L. Trig, 

 costatfl, (var. denliculata), Ag. T'rig. signata, Ag. 

 Brachiopoda mostly absent. Am. " Imviusculus^^ 

 occurs at Hundale. 



Dwarfed marine fossils sporadically, 

 is very rich in vegetable remains. 



The "plant bed" 



1. GerviUia lata, Phil. Trig, recticosta. Lye. 

 Trig, conjungens, Phil. Ceromya Bajociana, D'Orb. 

 Pygaster semisulcatus, Phil. Gonioseris angulata, 

 Dune. 



2. Cardium Buchmani, M. and L. Isocardia 

 cordata, Buckm. T. recticosta and conjungens, Pyg. 

 semisulcatus, and Stom. germinans, Phil. Ter. 

 submaxillata, Dav. 



Traces of a marine horizon with Pholadomya, etc 

 Numerous plant remains. 



Gervillia tortuosa, Phil. G. lata, Phil. Macro- 

 don Hirsonensis, D'Arch. Trig, denticulata, Ag. 

 Trig, v-costata, Lye, -small var. Trig, spinu- 

 losa, Y. and B. Cardium acutafigulum, Phil. 

 Astarte elegans, Sow. Ceromya Bajociana, D Orb. 

 Rhynch. subobsoleta, Dav. 



In the sands Am. aalensis, Ziet. Atn. conmensis. 

 Von Buch. {teste Wright, Q.J.G.S. vol. xvi. p. 4). 

 Lingula Beanii,VhJi\.. Discinareflexa, Sow. Rhyjick. 

 cynocephala. Rich. Ter. trilineata, Y. and B. 



