DavidRoyHunter.pdf

The outer b.s.lmargin h
u.oothly c.onvex.
with. large tnward flaring of the b.a",al .... ri!.in h."e a s..all~r poStero-oral
.ngle th..an do forms
exhibiting less basal flartng.
Rellarks. The li..ited .DClnnt of ....ter1ll1 fro.. thh study probably
doesnotglvefull perspectiv8to then.ture of the applI.ratus
of this
spedes. Th" general IIlOrphology of the constituent eh-ents is siOl11ar
,
to those of the Distacodus venustull appa..."tus and thulthe tlorospecles
appur to be taxonomically close together. Therefore, P.
possibly has a typ" lila apparstus.
sefll.iaymmetricus
~.62 ..pec1_ns(37dr",plnodifot"llls.25015todlfo["llls) .•
Subra.Uy PROTOPAlmF.RODONTINAE Lindstroln. 1970
Et>ended D1a8no0;1..
Conodont apparatuses consisting of symmetrical
and uy_erric.l simple cone conodont. that are lion-costate in early
spedu. costate and non-costate to wholly
costar", 1n later species.
ElelDf!nrs of the appllntus gl'n..rally have an anterior and posterior ..·dg.. ,
and can exhibit a high degree of variatic",. Th.. el..ments can non",(hcless
be arranged into a silll'le sYJ""'t-trical as)'llftetrlcal 8y......try tran.. it~on
seri.....nd a curvatur.. transition ....ri..... both of .m.ich are char"ctl'ri.­
tlcof .. typeI11aapparatu•.
~nus DREPANODUS Pander. 1856
Type SpedI'll. Drepanodus arcuatusPandu, l856
..lelllent..
Di.c~"'ion. LindltrOll (l971>' included fo~r fGnu of non-co.rate
in~andp1npo1nted1t.f1ratappearance·tot"e