Ammonoids are extinct spiral shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living coleoids (i.e., octopuses, squid...

the Anarcestida, is the ancestral order within the cephalopod subclass Ammonoidea originating from bactritoid nautiloids, that lived in what would become...

is not elaborate. Arkel et al., Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geological Society of America & University...

cephalopods have been identified. Two important extinct taxa are the Ammonoidea (ammonites) and Belemnoidea (belemnites). Extant cephalopods range in...

Barremitinae is a subfamily belonging to the Ammonoidea subclass. Whorl section in this group ranges from more or less circular through rectangular to...

dictionary. Ammonites are an extinct group of marine animals, including: Ammonoidea, a subclass Ammonitida, an order Ammonitina, a suborder Ammonite may also...

Fossilworks.org Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence,...

Permian Ammonoidea. Miller, Furnish, and Schindewolf (1960) ; Paleozoic Ammonoidea, in the Treatise on Invertebrat Paleontology, Part L, Ammonoidea Furnish...

The Nusplingen Limestone (German: Nusplingen Plattenkalk) is a geological formation in Baden-Württemberg, Germany. It preserves fossils dating to the Kimmeridgian...

primarily orthoconic orders (including the ancestors for Bacritida and Ammonoidea); and Nautilitoidea, which includes the first coiled cephalopods, Tarphycerida...

The Gogo Formation in the Kimberley region of Western Australia is a Lagerstätte that exhibits exceptional preservation of a Devonian reef community. The...

Eleniceras is an extinct genus of cephalopods belonging to the Ammonoidea subclass. The genus was named after the Bulgarian town of Elena. The holotype...

List of mollusc orders illustrates the 97 orders in the phylum Mollusca, the largest marine animal phylum. 85,000 extant species are described, making...

Eleniceras stevrecensis is an extinct species of cephalopods belonging to the Ammonoidea subclass. This animal lived 140–129 million years ago during the Hauterivian...

crinoids are all abundant in the oceans. First fully coiled cephalopods (Ammonoidea and Nautilida, independently) with the former group very abundant (especially...

Eleniceras nikolovi is an extinct species of cephalopods belonging to the Ammonoidea subclass. This animal lived 140–129 million years ago during the Hauterivian...

simple goniatitic sutures. Treatise on Invertebrate Paleontology, Part L, Ammonoidea; Geological Society of America and University of Kansas, 1957, Database...

early Emsian (Devonian) in the Tafilalt (Morocco), the origin of the Ammonoidea, and the first African pyrgocystid edrioasteroids, machaerids and phyllocarids"...

needed] Arkell et al., 1962, Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology part L, Mollusca 4, Ammonoidea. R.C. Moore (ed) Paleobiology Database...

a number of organic materials used as gems, including: Amber Ammolite Ammonoidea Bone Copal Coral Ivory Jet Nacre (Mother of pearl) Operculum Pearl Seashell...

and even possibly from the Silurian. The Bactritidae gave rise to the Ammonoidea in the Early Devonian starting with an early Bactrites and going with...

The largest prehistoric animals include both vertebrate and invertebrate species. Many of them are described below, along with their typical range of size...

extinct genus of ammonite from the later Cretaceous belonging to the Ammonoidea family Gaudryceratidae. Anagaudryceras has a moderately involute shell...

Abrytasites (Abrytusites) is an extinct genus of cephalopods belonging to the Ammonoidea subclass. The genus was named after the ancient Roman town of Abrittus...

Acanthoceras is an extinct cephalopod genus belonging to the subclass Ammonoidea and family Acanthoceratidae that lived from the Albian to early Coniacian...

(Ammonoidea). C.R. Acad. bulg. Sci., 33, 2; 245-48. St Breskovski (1977), Sur la classification de la famille Desmoceratidae Zittel, 1895 (Ammonoidea,...

cleon and C. besairei. Treatise on Invertebrate Paleontology, Part L (Ammonoidea). R.C. Moore (ed). Geological Soc of America and Univ. Kansas Press (1957)...

2017-10-19. Bibliography W.J. Arkell, et al. 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Ammonoidea. University of Kansas Press....

Berbericeras is an extinct genus of cephalopod in the subclass Ammonoidea. Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28...

molluscs, including other cephalopods like the nautiloids and the extinct Ammonoidea. They have eight limbs like other Coleoidea, but lack the extra specialised...