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Crassostrea Ingens
''Crassostrea ingens'' is a species of fossil oyster, a marine bivalve mollusk in the family Ostreidae, the oyster. This species lived during the Pliocene. Fossils have been found in New Zealand shallow-water limestone and shellbeds. Locations include the Wairarapa, Whanganui basin, Gisborne district, North Canterbury, and Hawke's Bay Hawke's Bay () is a region on the east coast of New Zealand's North Island. The region is named for Hawke Bay, which was named in honour of Edward Hawke. The region's main centres are the cities of Napier and Hastings, while the more rural ... (especially in the Te Aute limestone). Description ''Crassostrea ingens'' is a giant fossil oyster. It has a shell reaching a height of to over . This shell is biconvex. The left valve is thick and deep, with inflation of to over ; interior cavity depth to over . The right valve is almost flat, to thick. Most specimens curve slightly to the left. The adductor scar area in most Pliocene specime ...
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Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene followed the Oligocene and preceded the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by distinct global events but by regionally defined transitions from the warmer Oligocene to the cooler Pliocene Epoch. During the Early Miocene, Afro-Arabia collided with Eurasia, severing the connection between the Mediterranean and Indian Oceans, and allowing the interchange of fauna between Eurasia and Africa, including the dispersal of proboscideans and Ape, hominoids into Eurasia. During the late Miocene, the conn ...
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Pliocene
The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58See the 2014 version of the ICS geologic time scale
million years ago (Ma). It is the second and most recent epoch of the Neogene Period in the Cenozoic, Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the four most recent major glaciations entirely within the Pleistocene, the Pliocene also included the Gelasian Stage, which lasted from 2.59 to 1.81 Ma, and is now included in the Pleistocene. As with other older geologic periods, the Stratum, geological strata that define the start and end are well-identified but the exact dates of the start a ...
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Oyster
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but not all oysters, are in the superfamily Ostreoidea. Some species of oyster are commonly consumed and are regarded as a delicacy in some localities. Some types of pearl oysters are harvested for the pearl produced within the mantle. Others, such as the translucent Windowpane oysters, are harvested for their shells. Etymology The word ''oyster'' comes from Old French , and first appeared in English during the 14th century. The French derived from the Latin , the feminine form of , which is the Latinisation (literature), latinisation of the Ancient Greek () 'oyster'. Compare () 'bone'. Types True oysters True oysters are members of the family Ostreidae. This family includes the edible oysters, which mainly belong to the genera '' ...
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Marine (ocean)
The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as ''oceans'' (the Pacific, Atlantic, Indian, Antarctic/Southern, and Arctic Ocean),"Ocean."
''Merriam-Webster.com Dictionary'', Merriam-Webster, https://www.merriam-webster.com/dictionary/ocean . Accessed March 14, 2021.
and are themselves mostly divided into seas, gulfs and subsequent bodies of water. The ocean contains 97% of
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Bivalve
Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consisting of a hinged pair of half-bivalve shell, shells known as valve (mollusc), valves. As a group, bivalves have no head and lack some typical molluscan organs such as the radula and the odontophore. Their gills have evolved into ctenidium (mollusc), ctenidia, specialised organs for feeding and breathing. Common bivalves include clams, oysters, Cockle (bivalve), cockles, mussels, scallops, and numerous other family (biology), families that live in saltwater, as well as a number of families that live in freshwater. Majority of the class are benthic filter feeders that bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other h ...
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Mollusk
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000  extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and the proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater and even terrestrial species. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known extant i ...
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Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ...
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Ostreidae
The Ostreidae, the true oysters, include most species of molluscs commonly consumed as oysters. Pearl oysters are not true oysters, and belong to the order Pteriida. Like scallops, true oysters have a central adductor muscle, which means the shell has a characteristic central scar marking its point of attachment. The shell tends to be irregular as a result of attaching to a substrate. Both oviparous (egg-bearing) and larviparous (larvae-bearing) species are known within Ostreidae. Both types are hermaphrodites. However, the larviparous species show a pattern of alternating sex within each individual, whereas the oviparous species are simultaneous hermaphrodites, producing either female or male gametes according to circumstances. Members of genus '' Ostrea'' generally live continually immersed and are quite flat, with roundish shells. They differ from most bivalves by having shells completely made up of calcite, but with internal muscle scars of aragonitic composition. They f ...
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Wairarapa
The Wairarapa (; ), a geographical region of New Zealand, lies in the south-eastern corner of the North Island, east of metropolitan Wellington and south-west of the Hawke's Bay Region. It is lightly populated, having several rural service towns, with Masterton being the largest. It is named after its largest lake, Lake Wairarapa. The region is referred to as The Wairarapa, particularly when used after a preposition (e.g., locals will say they live "in the Wairarapa", and travel "to" and "from the Wairarapa"). Boundaries The Wairarapa is shaped like a rectangle, about long (from Palliser Bay north to Woodville) and wide (from the Tararua Range east to the coast). The Ngāti Kahungunu tribe's boundary for the region is similar. Their tribal area begins at Pōrangahau and ends at Turakirae. It is the southernmost of their three rohe (homelands) running down the eastern North Island from Wairoa. For the Rangitāne tribe, the Wairarapa is part of a wider homeland that include ...
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Whanganui District
Whanganui District is one of the districts of New Zealand. It includes the city of Whanganui and surrounding areas. Geography Formerly spelled "Wanganui", the Whanganui District Council resulted from the amalgamation of Wanganui and Waitotara county councils and Wanganui City Council. The district has an area of 2,373 km². Much of the land in Whanganui District is rough hill country surrounding the valley of the Whanganui River. A large proportion of this is within the Whanganui National Park. In 2015 the New Zealand Geographic Board, at the request of the Wanganui District Council, changed the name of the district from Wanganui District to Whanganui District, bringing the name in line with the spelling of the river. Demographics Whanganui District covers and had an estimated population of as of with a population density of people per km2. All but some people in the Whanganui District live in the city itself, meaning there are few prominent outlying settlements. A sma ...
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Gisborne District
Gisborne District or the Gisborne Region (Māori language, Māori: ''Te Tairāwhiti'' or ''Te Tai Rāwhiti'') is a local government area of northeastern New Zealand. It is governed by Gisborne District Council, a unitary authority (with the combined powers of a districts of New Zealand, district and regions of New Zealand, regional council). It is named after its largest settlement, the list of cities in New Zealand, city of Gisborne, New Zealand, Gisborne. The region is also commonly referred to as the East Coast. The region is commonly divided into the East Cape and Poverty Bay. It is bounded by mountain ranges to the west, rugged country to the south, and faces east onto the Pacific Ocean. Government The district is governed by Gisborne District Council, which is a unitary authority#New Zealand, unitary territorial authorities of New Zealand, territorial authority, meaning that it performs the functions of a regional council as well as those of a territorial authority (a di ...
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Canterbury, New Zealand
Canterbury () is a Regions of New Zealand, region of New Zealand, located in the central-eastern South Island. The region covers an area of , making it the largest region in the country by area. It is home to a population of The region in its current form was established in 1989 during nationwide local government reforms. The Kaikōura District joined the region in 1992 following the abolition of the Nelson-Marlborough Regional Council. Christchurch, the South Island's largest city and the country's second-largest urban area, is the seat of the region and home to percent of the region's population. Other major towns and cities include Timaru, Ashburton, New Zealand, Ashburton, Rangiora and Rolleston, New Zealand, Rolleston. History Natural history The land, water, flora, and fauna of Canterbury has a long history, stretching from creation of the greywacke basement rocks that make up the Southern Alps to the arrival of the first humans. This history is linked to the s ...
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