-
Molluscan Studies. 73 (4): 399–410. doi:10.1093/mollus/eym038. Warnke, K.;
Keupp, H. (2005). "Spirula – a
window to the
embryonic development of ammonoids...
- 1096-3642.1995.tb00110.x. ISSN 0024-4082. Steiner, M.; Hu, S.; Liu, J.;
Keupp, H. (2012). "A new
species of
Hallucigenia from the
Cambrian Stage 4 Wulongqing...
-
German Solnhofen plattenkalk.
Coleoid cephalopods through time (Warnke K.,
Keupp H.,
Boletzky S. v., eds)
Berliner Paläobiol. Abh. 03 101-111
Berlin 2003...
- †Spirulirostridae
Family †Spirulirostrinidae
Family Spirulidae Fuchs, Dirk;
Keupp, Helmut; Trask, PAT; Tanabe,
Kazushige (2012). "Taxonomy,
morphology and...
- 45: 171–176.
Retrieved 10 May 2016. Schmitt, V; Federspiel, I; Eckert, J;
Keupp, S; Tschernek, L; Faraut, L; Schuster, R; Michels, C; Sennhenn-Reulen, H;...
- 1007/s12542-010-0066-9. S2CID 129754736. Fuchs, Dirk; Iba, Yasuhiro; Tischlinger, Helmut;
Keupp, Helmut; Klug,
Christian (October 2016). "The
locomotion system of Mesozoic...
- is
sawed off and the
finished piece is polished. Fuchs, D.; Engeser, T.;
Keupp, H. (2007). "Gladius
shape variation in
coleoid cephalopod Trachyteuthis...
- doi:10.1016/j.palaeo.2016.05.029. Fuchs, D.; Ifrim, C.; Nishimura, T.;
Keupp, H. (2013). "Longibelus Gen. Nov., a new
Cretaceous coleoid genus linking...
-
Arnold (1996).
Ammonoid Paleobiology. ISBN 978-0-306-45222-2. Warnke, K.;
Keupp, H. (2005). "Spirula – a
window to the
embryonic development of ammonoids...
-
composition of the
squid pen from
Doryteuthis pealeii Fuchs, D.; Engeser, T.;
Keupp, H. (2007). "Gladius
shape variation in
coleoid cephalopod Trachyteuthis...
