Type specimens of fossil “Architectibranchia” and Cephalaspidea (Mollusca, Heterobranchia) in the Academy of Natural Sciences of Philadelphia

Carlo M Cunha,Rodrigo B Salvador

doi:10.3897/zse.94.27401

Abstract

The type specimens of fossil “Architectibranchia” and Cephalaspidea (Mollusca: Heterobranchia) deposited in the Academy of Natural Sciences of Philadelphia, USA, are listed herein. The collection includes types of circa 60 species, from the families: Acteonellidae, Acteonidae, Bullidae, Cylichnidae, Haminoeidae, Philinidae, Retusidae, Rhizoridae, Ringiculidae and Scaphandridae. The catalogue is presented in systematic order, with information on the original description, type locality, type stratum and age, catalog number in the collection, and current taxonomic status. Further taxonomic notes are offered when pertinent. Several species are illustrated here for first time. The new combinationsRoxaniahornii(Gabb, 1864) andVolvulellaminutissima(Gabb, 1860) are proposed. Some species that have previously been assigned to Acteonidae are revised here, resulting in the following new combinations:Odostomiamilium(Lea, 1846),Chrysallidasculpta(Lea, 1846) andPyrgulinaangulata(Lea, 1846). The list of taxa is also presented in other arrangements (alphabetically by specific epithets and by authorship and date) to facilitate locating information.

Highlights

The collection of fossil mollusks in the Academy of Natural Sciences of Philadelphia (ANSP; Philadelphia, PA, USA) houses about 80,000 lots, mostly of gastropods
The collection counts with original material of several 19th and early 20th century paleontologists, such as Timothy A
We present here an annotated catalogue of the fossil “Architectibranchia” and Cephalaspidea gastropod types housed in the ANSP Invertebrate Paleontology collection

Summary

Introduction

The collection of fossil mollusks in the Academy of Natural Sciences of Philadelphia (ANSP; Philadelphia, PA, USA) houses about 80,000 lots, mostly of gastropods. Acteon cretacea Gabb, 1862 (Weller 1907, Richards and Ramsdell 1962). Syntypes ( of Acteonina biplicata Gabb, 1860), ANSP 19466 (as “type” in Richards 1968: 135), 1 shell, ANSP IP19467, 1 shell.

Results

Conclusion