Marine Species 



27 



Carditamera floridana Conrad 



Illustration: Plate ^^,j,j'. 



Modern distribution: Common on all three coasts, 

 Isla Mujeres, Q.R., to Isla Carmen, Camp. 



Archaeological occurrence: 



DZIBILCHALTUN: 8 in Formative deposits, 

 7 unworked, i pierced below umbo for suspen- 

 sion; I with hole drilled below umbo for suspen- 

 sion as bead. Late Early period; i unworked in 

 probably Decadent period deposit; 2 unworked, 

 unstratified, i an offering in Cenote Xlacah. 

 TIKAL: I unworked, not dated (M-MS). 



Family: CORBICULIIDAE 



Pseudocyrena floridana (Conrad) 



Illustration: Plate i6,d,dd. 



Modern distribution: Common on all three coasts 



from Turnefle Islands, B.H., to Isla Carmen, 



Camp. 

 Archaeological occurrence: 



DZIBILCHALTUN: 2 unworked, in Formative 



deposits. 



Family: DIPLODONTIDAE 



Diplodonta semiaspera Philippi 

 Illustration: Warmke and Abbott, 1961, pi. 35,/. 

 Modern distribution: Collected at Dolores, Yuc. 

 Archaeological occurrence: 



DZIBILCHALTUN: i, unworked, in Late Early 



period cache. 



Comment: This tiny shell may have been introduced 

 inadvertently in beach drift inside a large conch. 



Family: LUCINIDAE (lucines) 



Lucina pensylvanica (Linne) 



Illustration: Plate i6,e,ee. 



Modern distribution: Common on east coast from 

 Belize to Isla Holbox, and on Alacran Reef. 



Archaeological occurrence: 



ISLA CANCUN MIDDEN: 5 unworked, For- 

 mative. 



Phacoides pectinatus (Gmelin) [^ L. jamaicensis 



Lamarcl(\ 

 Illustration: Plate 16,/. 

 Modern distribution: Common on entire littoral of 



the peninsula, from Chapel Cay, B.H., to Isla 



Carmen, Camp. 



Archaeological occurrence: 



DZIBILCHALTUN: 6 unworked. Formative; i 

 with 2 perforations near ventral margin for sus- 

 pension, Formative; i unworked in Late Early 

 period or Pure Florescent. 



ISLA CANCUN MIDDEN: 9 unworked, For- 

 mative. 



Phacoides radians (Conrad) 



Illustration: Warmke and Abbott, 1961, pi. 36,;'. 

 Modern distribution: Collected at Chavihau, Yuc. 

 Archaeological occurrence: 



DZIBILCHALTUN: i unworked, in Late Early 



period cache. 



Comment: This tiny pelecypod may have been 

 introduced inadvertently in beach drift inside large 

 conchs in the offering. 



Coda}{ia orbicularis (Linne) 



Illustration: Plate T-(>,g. 



Modern distribution: Common on all three coasts 

 from Turneffe Islands, B.H., to Isla Jaina, Camp. 

 Collected at Alacran Reef. 



Archaeological occurrence: 



DZIBILCHALTUN: 2 unworked, one in For- 

 mative deposit, one unstratified. 

 ISLA CANCUN MIDDEN: 7 unworked. For- 

 mative. 



BARTON RAMIE: i pierced for suspension, 

 hinge downward, margin considerably reduced, 

 Spanish Lookout phase (W, p. 507, fig. 310,/^). 

 TIKAL: 5 unmodified (M, p. 66, age not given). 



Family: CHAMIDAE (jewel boxes) 



Chama congregata Conrad 



Illustration: Plate 1-1, bb. 



Modern distribution: East coast from Turneffe 

 Islands, B.H., to Isla Contoy, Q.R. Also at Alacran 

 Reef and Cayo Areas. 



Archaeological occurrence: 



DZIBILCHALTUN: i pair, i single valve, all 

 unworked, in Late Early period cache (was prob- 

 ably attached to large conch in offering). 



Comment: As Dzibilchaltun specimens were prob- 

 ably attached to a large Strombus costatus in the 

 cache, they almost surely originated on the nearby 

 north coast, although the species has not been re- 

 corded in modern north coast collections. 



