by Portage [Green Shales of Huron Gr.] ancl Chemung proper [argil¬ 
laceous and areno-micaceous shales of Huron Gr.] 
First appearance of Land Vegetation—represented by Lepidoden- 
droids, the highest of flowerless plants, and perhaps Conifers, the 
lowest of flowering plants. Neither Mosses nor Grasses. Also of 
Tetrabranchs with lobed septa and dorsal siphon; Terebratula *. 
Disappearance of all the old genera of Trilobites ; Atrypa. 
Decline of Trilobites, Orthoceratites, Strophomena, Orthis. 
Reign of Fishes ; Spirifer mucronatus, Atrypa , reticularis , Spirigera 
concentrica. 
Period of Lepidodendron, Sigillaria , Noeggerathia, Sagenaria, Catam¬ 
ites [Land plants]; Coral-reefs; ILeliophyllum, Cystiphyllum, Diphy- 
phyllum, Favosites, Alveolites, Ccenostroma, Idiostroma, §tromatopora, 
Trachypora, Striatopora, Fistulipora, Callopora , CJicetetes [Corals] ; Nu- 
cleocrinus, Polatocrinus , Bhodocrinus , [Crinoids] ; Bryozoa ; Atrypa , 
Chonetes, Productus , Spirigera, Cyrtia, Strophomena, Strophodonta, 
Spirigera, Betzia, Terebratula*, Bhynchonella*, Piscina *, Lingula*, 
Crania * [Brach.] ; Grammysia, Orthonota, Pterinea, Aviculopecten 
[Lamell.1 ; Bellerophon, Pleurotomaria, Platyceras, Euomphalus, Lox- 
onema [G-aster] ; Goniatites, Orthoceras, Clymenia, Gomphoceras 
[Tetrabranchs] ; Smrorbis *; Phacops, Palmania, Proetus, Arges', 
[Trilob.] Cypridina [Entomostracan]. Also the American fishes 
Macropetalichthys, Coccosteust Pierichthys ? and numerous’European 
genera. 
Note 1. The “ Catskill Group,” so far as distinct from the Chemung , is probably- 
included in the Waverly. It contains Holoptychius (Fish), Euomphalus , Edmon- 
dia , Cypricardia. 
2. In Scotland, there occur, in beds generally regarded Devonian, the remains of 
Telerpeton Eginmense , an acrodont, amphicoelian, lizard-like Reptile, associated 
with remainsnof the reptilian Stagonolepis and Hyperdapodon. These beds, how¬ 
ever, are suspected to be Triassic. 
V. CARBOMFEROU§ ACJE [Carboniferien]. 
First appearance of Reptiles (at least in America); Insec- 
teaks ; Barnacles ; Gymnosperms. 
Reign of Placoid and Ganoid Fishes; Crinoids ; Acrogen- 
ous Plants. 
Period of Actinocrinidm ; Cyatlioerinidse; Cyatliophyllidse 
Nautili *. The bizarre Fishes of the Devonian have been re¬ 
placed by more normal types. 
Lower Carboniferous 15, Waverly Period [Conglomerate 
of Western N. Y.; Marshall, Mich.; Chouteau, Mo.; Kinderhook, Ill.; 
Yellow Sandstone, Io., etc.], 16, Mountain Limestone— represented 
by the Burlington, Keokuk, Warsaw [Chester] St. Louis andKaskas- 
kia Limestones [Knobstones, la., Ky.; Silicious Group, Tenn.]. The 
Waverly rocks are clearly embraced in the Mountain Limestone se¬ 
ries of Europe. 
First appearance of Palecomemt s, Hybodus [Fishes] ; Pliillipsia, Grif- 
fithides [Trilob.] ; Oysters; Comatulidee [Free Crinoids] ; and in 
America, of Reptiles. 
Disappearance of Trilobites, Atrypa reticularis, Strophomena 
rhomboidalis, Pentamerus. 
Decline of Strophomenidae, Orthis. 
Reign of Productidae, Spirifer, Spirigera; Goniatites ; Blastoids ; 
; Crinids. 
s 
