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

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

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

The Solnhofen Limestone or Solnhofen Plattenkalk is a collective term for multiple Late Jurassic lithographic limestones in southeastern Germany, which...

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...

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

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

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

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

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

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

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

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

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

The Rotzo Formation (also known in older literature as the Noriglio Grey Limestone Formation) is a geological formation in Italy, dating to roughly between...

Cyclolobidae: Goniatitid Ammonoidea belonging to the Cycloloboidea with thickly discoidal to subglobular shells with a small but open umbilicus and ammonitic...

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

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

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

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

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

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

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...

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

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

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

Eukaryota Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: †Ammonoidea Order: †Ammonitida Suborder: †Ancyloceratina Wiedmann [de], 1966 Superfamilies...

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

Paleobiology Database Miller, Furnish, and Schindewolf, 1957. Paleozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L. Geological Society of...