The tail is usually altered from the heterocercal type…to the homocercal and diphycercal forms (Tracy I. Storer).
Useful english dictionary. 2012.
Diphycercal — Diph y*cer cal, a. [Gr. difyh s double (di = di s twice + fy ein to produce) + ke rkos tail.] (Anat.) Having the tail fin divided into two equal parts by the notochord, or end of the vertebral column; protocercal. See {Protocercal}. [1913… … The Collaborative International Dictionary of English
y — ac·an·thol·y·sis; ac·e·tol·y·sis; acet·y·lase; acet·y·late; acet·y·la·tion; acet·y·la·tor; acet·y·le·na·tion; acet·y·lene; acet·y·le·nic; acet·y·le·nyl; acet·y·lide; acet·y·li·za·tion; acet·y·liz·er; ace·tyl·sa·lic·y·late; achlam·y·date;… … English syllables
ri — abac·te·ri·al; ab·de·ri·an; ab·ka·ri; ac·an·thop·te·ri; ac·an·thu·ri·dae; ac·a·ri·a·sis; ac·a·ri·na; ac·a·ri·nar·i·um; ac·a·ri·nol·o·gy; ac·a·ri·no·sis; ac·ces·so·ri·al; ac·ces·so·ri·us; ac·ci·pit·ri·dae; ac·cus·a·to·ri·al; acera·the·ri·um;… … English syllables
ic — ot·ic; zo·ic; IC; ac·a·dem·ic; ac·ro·bat·ic; ac·ro·me·gal·ic; ac·ro·nar·cot·ic; acryl·ic; adon·ic; ae·ol·ic; aero·stat·ic; al·ca·ic; al·co·hol·ic; al·go·gen·ic; al·pha·nu·mer·ic; al·ta·ic; am·har·ic; am·o·rit·ic; an·al·pha·bet·ic; an·a·lyt·ic;… … English syllables
tion — ab·bre·vi·a·tion; ab·di·ca·tion; ab·duc·tion; ab·er·ra·tion; ab·er·ra·tion·al; ab·jec·tion; ab·junc·tion; ab·ju·ra·tion; ab·lac·ta·tion; ab·la·tion; ab·lu·tion; ab·mi·gra·tion; ab·ne·ga·tion; ab·o·li·tion; ab·o·li·tion·ary; ab·o·li·tion·dom;… … English syllables
iza — al·co·hol·iza·tion; car·a·mel·iza·tion; chris·tian·iza·tion; com·fort·iza·tion; de·mon·iza·tion; diph·thong·iza·tion; en·thron·iza·tion; es·trin·iza·tion; ether·iza·tion; eu·ro·pe·an·iza·tion; ex·ten·sion·al·iza·tion; ex·te·ri·or·iza·tion;… … English syllables
double + kérkos tail + English -