CLASSIFICATION 

 HISTORY 



The genus Camerophoria originally was described as, "... a shell 

 approximating to Pentamerus in some points of its internal structure" 

 (King, 1844). In 1850 King assigned it to the family Hypothyridae 

 along with Pentamerus and several other genera. Davidson ( 1858, p. 

 23, 90) assigned it to the Rhynchonellidae, and since then opinion has 

 divided on the proper place for Camerophoria (now Stenoscisma) and 

 its relatives. 



Hall and Clarke (1894, p. 214) said that "Camerophoria is a genus 

 combining a modified pentameroid interior with a rhynchonelloid ex- 

 terior." Hall (1867) classified it in the Rhynchonellidae, but at the 

 time the family included Pentamerus as well. Waagen (1883, p. 412, 

 435) established the Camerophoriinae as a subfamily of the Rhyn- 

 chonellidae, equal in rank to the subfamily Pentamerinae. Schuchert 

 ( 1896, in Zittel and Eastman) elevated the Pentameracea to equal rank 

 with the superfamily Rhynchonellacea, subdividing it into families, 

 with Camarophoria included with the Pentameridae. Subsequently, 

 many authors accepted this usage; Girty (1909), Weller (1914), 

 Broili (1916), Grabau (1931 a and b, 1934), and Easton (1962) are 

 important works in which "Camerophoria" is classed with the Penta- 

 meridae. 



Kozlowski (1929, p. 132) recognized the Pentameracea as consonant 

 with the Rhynchonellacea, following Schuchert (1897) but placed the 

 Camerophoriidae with the latter. Schuchert and Cooper (1932) ex- 

 cluded CamerophoriaAike forms from their monograph of the order 

 Pentameroidea, and most subsequent authors have agreed with them 

 and with Kozlowski that these forms belong in the Rhynchonelloidea 

 (e.g., Cooper, 1944; Stehli, 1954; Rzhonsnitskaya, 1958, 1959; Lich- 

 arev, 1960; Shaw, 1962). 



Shrock and Twenhofel (1953) introduced the superfamilial name 

 Stenoscismacea for the group after it had become generally accepted 

 that Camerophoria must be abandoned as an objective junior synonym 

 of Stenoscisma. This superfamily name was corrected by Muir-Wood 

 (1955) to Stenoscismatacea, and the group was classed with the 

 Rhynchonelloidea. The International Code of Zoological Nomenclature 

 (1961, article 40) requires retention of family-group names that are 

 based on junior synonyms, unless this synonymy was discovered be- 

 fore 1961, the family-group name changed, and the change generally 

 accepted. As Schmidt (1964, p. 132) has pointed out, the family-group 



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