-
Tarphyceras is a
genus of
tarphyceratid with
whorls rounded in
cross section,
having a
deeply impressed dorsum and a
ventral to
subcentral siphuncle,...
- Centrotarphyceras;
intermediary as in
Tarphyceras, or
subventral as in Campbelloceras.
Cross sections vary.
Tarphyceras and
Campbelloceras are rounded. Centrotarphyceras...
- Estonioceras, are
loosely coiled and gyroconic; others, such as Campbelloceras,
Tarphyceras, and Trocholites, are
tightly coiled, but
evolute with all
whorls showing...
-
close to the
venter in all
growth stages.
Campbelloceras differs from
Tarphyceras in that the rate of
expansion is greater, the
siphuncle is proportionally...
- †Talattoceras †Tambegiroceras †Tanchiashanites †Tanycameroceras †Taoqupoceras †
Tarphyceras †Tartaroceras †Taskanoceras †Taxyceras †Teichertia †Teichertoceras †Temnocheilus...
- †Stylonurus †Subligaculum †Subulites †Suecoceras †Syringopora †Taeniocrada †
Tarphyceras †Tentaculites †Tetradium †Tetraxylopteris †Tornoceras †Triarthrus †Triarthrus...
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Eurystomites Hardmanoceras Holmiceras Pionoceras Trocholitoceras Wichitoceras Tarphyceras Litoceras Curtoceras Arkoceras Estonioceras Tragoceras Trilobites of...
-
species †Taenicephalites †Taenicephalites
macrops †
Tarphyceras †
Tarphyceras multicameratum †
Tarphyceras perkinsi †Tatonaspis †Tatonaspis
breviceps †Teridontus...
- †Taineopora †Taonurus †Taonurus
caudagalli †
Tarphyceras †
Tarphyceras clarkei †
Tarphyceras farnsworthi †
Tarphyceras multicameratum †Technophorus †Technophorus...
- or
unidentified comparable form †Strophomena
planumbona †Tainoceras †
Tarphyceras †Tentaculites †Tersomius †Tersomius
texensis – or
unidentified comparable...
