378 Reviews—North American Paleontology. 
The geology of the district includes (1) a basement complex of Triassic 
- age, (2) the Trabuco conglomerates, which are non-fossiliferous and 
said to be pre-Chico, (3) Upper Cretaceous (Chico Group), (4) Upper 
Eocene of Tejon, (5) lowermost Miocene of Vaqueros, (6) Alluvium 
of Pleistocene age. Three zones are recognized among the Cretaceous 
rocks of the region, the oldest being the Actaonella oviformis zone, 
above being the Zurritella pescaderoensis zone, and then the TZellina 
ooides zone. Full lists of the fossils, which are chiefly of molluscan 
interest, are given, showing their distribution through the different 
zones. 
TR, 2B NG 
VI.—Fauna From tHe Lower Priocenre at JAcatiros. CREEK AND 
Watrnam Canyon, Fresno Country, Catirornta. By Jorern 0. 
Nomianp. Uniy. California Publ. Bull. Dept. Geol., vol. ix, 
No. 14, pp. 199-214, pls. ix—xi, 1916. 
HE fauna assigned to this horizon and as listed in the memoir 
embraces 8 species of Echinodermata, 2 Cirripedia, 49 Pelecy- 
poda, and 29 Gastropoda, including the description and figuring of 
the following new species: Gastropoda: Astralium arnoldi, Chryso- 
domus coalingensis, Iissuridea subelliptica, Durex perangulatus, Natica 
(Neverita) orbieularis, Trophon magister, Turritella nova; Pelecypoda: 
Mytilus kewi, Tivela trigonalis. The author points out a close 
resemblance existing between the Etchegoin and Jacalitos faunas, 
the former having been recognized as of probably Pliocene age by 
Professor J. C. Merriam; henee it is considered that the Jacalitos 
deposits should be regarded as Lower Pliocene, although certain 
observers had placed them in the Upper Miocene. 
Rie Ne 
VII.—Fauna oF THE So-cALLED BoonE CHERT, NEAR BATESVILLE, 
Arkansas. By Grorcze H. Ginry. Dept. Interior United States 
Geol. Surv. (George Otis Smith, Director), Bull. 595, pp. 46, 
PSI ae Oo. 
(JVHE rocks with which this memoir deals are of Mississippian age 
and therefore belong to the Carboniferous Series. Faunal 
relationships are traceable between the Boone Chert fossils and those 
of the Moorefield Shale of Arkansas, but not with the Boone 
Limestone as has been usually recognized by paleontologists. In 
a tabulated statement is given the species of the Boone Chert fauna 
and their occurrence in the Moorefield Shale (chiefly the ‘‘Spring 
Creek Limestone”’). This fauna consists of Corals, Bryozoa, Brachio- 
poda (Productella, Productus, Spirifer, Reticularia, etc.), Pelecypoda 
(Conocardium, Parallelodon), Gastropoda (Bembexia, Huomphalus), 
Ostracoda (Primitia), and the following new species: Sporifer 
martinitformis, Martinia (?) pilosa, and Conocardium meekanum var. 
magnum (= new var.). 
Reb ene 
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