Fourth Series, Bulletin Volume 10 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...pods as occur in the upper part of the Silurian at Sandusky.................. 1 8 4. Rather massive, somewhat banded gray lime-stone showing a tendency to split into thin uneven layers. Unfossiliferous-5 O 3. Massive layer of gray banded fine grained. limestone without fossils---------------12 O 2. Massive gray limestone, banded and rather.fine grained. Hackel-toothed upper sur-face. Unfossiliferous................ 2 5 1. Massive layer of brown limestone banded with darker brown. Unfossiliferous----4 7 The fauna of the top of the Monroe was considered only to make certain that it is Silurian. The following is the Devonian fauna from the top layers of the quarry. Horizon. Calcisphzera robusta Williamson-.---------------------6 Favosites hemisphericus (Troost)-------------------6 Stylastrea a, nna, Whitfield............................ 6 Zaphrentis cornicula Edwards and Haime-------------6 Atrypa reticularis (Linnaeus)........................ 6 Atrypa, spinosa-Ha,11................................. 6 Chonetes mucronatus Hall........................... 6 Eunella lincklaani Hall.............................. 6 Nucleospira concinna Hall........................... 6 Pholidostrophia _iowaensis (Owen)------------------6 Stropheodonta hemispherica Hall--------------------6 Spirifer gregarius Clapp............................ 6 Conocardium cuneus (Conrad)-------------------.--6 Paracyclas elliptica Hall............................ 6 Sghizgdu5 tumidus Hall............................. 6 Callonema cf. bellatulum (Hall)----------------.----6 Euomphalus decewi Billings......................... 6 This is the same fauna as that collected from No. 6 of the Cable sec tion, and is doubtless contemporaneous with it. Here, however, it rests directly on the Silurian limestone. Be..