Given the question: Information: - A fish is any member of a group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates, together forming the olfactores. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Tetrapods emerged within lobe-finned fishes, so cladistically they are fish as well. However, traditionally fish are rendered obsolete or paraphyletic by excluding the tetrapods (i.e., the amphibians, reptiles, birds and mammals which all descended from within the same ancestry). Because in this manner the term "fish" is defined negatively as a paraphyletic group, it is not considered a formal taxonomic grouping in systematic biology. The traditional term pisces (also ichthyes) is considered a typological, but not a phylogenetic classification. - Pleocyemata is a sub-order of decapod crustaceans , erected by Martin Burkenroad in 1963 . Burkenroad 's classification replaced the earlier sub-orders of Natantia and Reptantia with the monophyletic groups Dendrobranchiata ( prawns ) and Pleocyemata . Pleocyemata contains all the members of the Reptantia ( including crabs , lobsters , crayfish , and others ) , as well as the Stenopodidea ( which contains the so - called '' boxer shrimp '' or '' barber - pole shrimp '' ) , and Caridea , which contains the true shrimp . Pleocyemata comprises the following infraorders : Stenopodidea Caridea Astacidea Glypheidea Axiidea Gebiidea Achelata Polychelida Anomura Brachyura These taxa are united by a number of features , the most important of which is that the fertilised eggs are incubated by the female , and remain stuck to the pleopods ( swimming legs ) until the zoea larvae are ready to hatch . It is this characteristic that gives the group its name . Pleocyemata also possess a lamellar gill structure as opposed to the branched found in Dendrobranchiata . The earliest fossil representative is the Devonian Palaeopalaemon . - Lobsters comprise a family (Nephropidae, sometimes also Homaridae) of large marine crustaceans. - Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) (= short, = tail), usually entirely hidden under the thorax. They live in all the world's oceans, in fresh water, and on land, are generally covered with a thick exoskeleton and have a single pair of claws. Many other animals with similar names such as hermit crabs, king crabs, porcelain crabs, horseshoe crabs, and crab lice are not true crabs. - Natantia (Boas, 1880) is an obsolete taxon of decapod crustaceans, comprising those families that move predominantly by swimming the shrimp (comprising Caridea and Procarididea), prawns (Dendrobranchiata) and boxer shrimp. The remaining Decapoda were placed in the Reptantia, and consisted of crabs, lobsters and other large animals that move chiefly by walking along the bottom. The division between Natantia and Reptantia was replaced in 1963, when Martin Burkenroad erected the suborder Pleocyemata for those animals that brood their eggs on the pleopods, leaving Dendrobranchiata for the prawns. Under this system, Natantia is a paraphyletic group. Burkenroad's primary division of Decapoda into Dendrobranchiata and Pleocyemata has since been corroborated by molecular analyses. - The Late Cretaceous (100.566 Ma) is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series. The Cretaceous is named after the white limestone known as chalk which occurs widely in northern France and is seen in the white cliffs of south-eastern England, and which dates from this time. - The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crayfish, crabs, lobsters, prawns, and shrimp. Most decapods are scavengers. The order is estimated to contain nearly 15,000 species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (about 3000 species) and Anomura (including hermit crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. The earliest fossil decapod is the Devonian "Palaeopalaemon". - The Caridea, commonly known as caridean shrimp, are an infraorder of shrimp within the order Decapoda. They are found widely around the world in both fresh and salt water. - The Stenopodidea is a small group of decapod crustaceans. Often confused with shrimp or prawns, they are neither, but belong in a group closer to the reptant decapods, such as lobsters and crabs. They may be easily recognised by their third pereiopod (walking leg), which is greatly enlarged. In the lobsters and crabs, it is the first pereiopod that is much bigger than the others. There are 71 extant species currently recognised, divided into 12 genera. Three fossil species are also recognised, each belonging to a separate genus. The earliest fossil assigned to the Stenopodidea is "Devonostenopus pennsylvaniensis" from the Devonian. Until "D. pennsylvaniensis" was discovered, the oldest known member of the group was "Jilinicaris chinensis" from the Late Cretaceous. - In biology, a taxon (plural taxa; back-formation from "taxonomy") is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is not uncommon, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. - A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. - Dendrobranchiata is a suborder of decapod crustaceans, variously called shrimp or prawns. There are 540 extant species in seven families, and a fossil record extending back to the Devonian. They differ from related animals, such as Caridea and Stenopodidea, by the branching form of the gills and by the fact that they do not brood their eggs, but release them directly into the water. They may reach a length of over and a mass of , and are widely fished and farmed for human consumption. What is the relationship between 'pleocyemata' and 'suborder'?
The answer is:
taxon rank