2141 



Hare, P. E.,and R. M. Mitterer. 



1965-1966. 



Nonprotein amino acids in fossil shells. Carnegie Inst. Washington Yearbook 

 65: 362-364. 



Change with geologic age of the amino acid content in various sample aliquots 

 of specimens of Mevcenaria, micromole amino acid/gram shell: 



Age 



Modern 



Recent fossil age 820 yr, Fla. 



Upper Pleistocene, Wailes Bluff, Md. 



Pleistocene, La Belle, Fla. 



Pliocene, Old Dock, N.C. 



Upper Miocene, Natural Well, N.C. 



Middle Miocene, Plum Point, Md. 





Total 







Insol. 



soluble 



Free 



Dialyzed 



15-25 



5-10 



n.d. 



~2 



0.6 



4.5 



1.0 



1.0 



0.5 



2.1 



1.6 



0.1 



0.1 



2.4 



1.8 



0.03 



<0.01 



1.0 



0.6 



n.d. 



<0.01 



1.4 



0.4 



n.d. 



0.04 



0.4 



0.3 



n.d. 



Change with geologic age of amino acid concentrations in total soluble frac- 

 tion of specimens of Mevcenaria , nanomole amino acid/gram shell: 









Upper 















-1000 



Pleis- 



Pleis- 



Plio- 



Upper 



Middle 





Modern 



yrs 



tocene 



tocene 



cene 



Miocene 



Miocene 



Aspartic acid 



2808 



1182 



520 



425 



149 



167 



17 



Threonine 



338 



131 



42 



26 



5 



1 



1 



Serine 



1152 



226 



54 



12 



22 



8 



6 



Glutamic acid 



555 



428 



216 



270 



138 



172 



60 



Proline 



651 



594 



311 



341 



154 



238 



68 



Glycine 



1457 



558 



193 



259 



159 



160 



54 



Alanine 



446 



305 



216 



360 



186 



280 



79 



a-amino butyric acid 



- 



- 



6 



26 



13 



21 



7 



Valine 



199 



155 



84 



161 



66 



109 



30 



Methionine 



16 



20 



15 



20 



tr 



6 



1 



Alloisoleucine 



- 



14 



19 



51 



26 



41 



11 



Isoleucine 



178 



91 



36 



53 



22 



31 



8 



Leucine 



288 



129 



68 



115 



37 



60 



18 



Tyrosine 



396 



112 



84 



89 



15 



26 



5 



Phenylalanine 



251 



117 



70 



90 



27 



46 



12 



Y-amino butyric acid 



- 



- 



12 



6 



8 



23 



10 



Ornithine 



- 



43 



40 



72 



24 



31 



6 



Lysine 



456 



205 



112 



153 



30 



48 



15 



Histidine 



40 



- 



- 



- 



- 



- 



- 



Arginine 



274 

 9505 



165 

 4475 



67 



2165 



34 

 2563 



- 



- 



- 





1081 



1468 



408 













- J. 



.L.M. 





2142 



Haskin, H. H. 1967. 



Clam survey, Lower Bay, Shrewsbury River, New Jersey. N.J. Dept. Conserv. 

 Econ. Devel, f 5 p. 



No reply to request for interlibrary loan. Search terminated. - J.L.M. 



2143 



Haven, Dexter S., Joseph G. Loesch, and James B. Whitcomb. 1973. 



An investigation into commercial aspects of the hard clam fishery and devel- 

 opment of commercial gear for the harvest of molluscs. Final contract report 

 for the period 1 July 1970 through 30 June 1973. Contract No. 3-124R, Vir- 

 ginia Inst. Mar. Sci., Gloucester Point, Virginia, 112 p. + illustr. 



596 



