Ischnacanthiformes Temporal range: | |
---|---|
Nerepisacanthus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | † Acanthodii |
Order: | † Ischnacanthiformes |
Families | |
Ischanacanthiformes is a prehistoric order of "acanthodian" stem-chondrichthyans found in Canada, Ukraine and United Kingdom. Members of this order were nektonic carnivores, [1] eating animals that swim rather than plankton. They had slender builds, light armor, deeply inserted spines, shark-like teeth, and two dorsal fins. [1] Some species were around 2 meters (6.56 feet) long. [2] It was described by Berg in 1940. [3] [4]
Actinopterygii, members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of skin supported by radially extended thin bony spines called lepidotrichia, as opposed to the bulkier, fleshy lobed fins of the sister class Sarcopterygii. Resembling folding fans, the actinopterygian fins can easily change shape and wetted area, providing superior thrust-to-weight ratios per movement compared to sarcopterygian and chondrichthyian fins. The fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the articulation between these fins and the internal skeleton.
Order is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families.
Audrey Faith McGraw, known professionally as Faith Hill, is an American country singer, songwriter, record producer and actress. She is one of the most successful country music artists of all time, having sold almost 50 million albums worldwide.
The Order, also known as the Brüder Schweigen and Silent Brotherhood, was a Neo-Nazi terrorist organization active in the United States between September 1983 and December 1984. The group raised funds via armed robbery. Ten members were tried and convicted for racketeering, and two for their role in the 1984 murder of radio talk show host Alan Berg.
Patricia Jane Berg was an American professional golfer. She was a founding member and the first president of the LPGA. Her 15 major title wins remains the all-time record for most major wins by a female golfer. She is a member of the World Golf Hall of Fame.
Pelycosaur is an older term for basal or primitive Late Paleozoic synapsids, excluding the therapsids and their descendants. Previously, the term mammal-like reptile had been used, and pelycosaur was considered an order, but this is now thought to be incorrect, and seen as outdated.
Samuel Timothy McGraw is an American country singer, songwriter, record producer, and actor. He has released 16 studio albums. 10 of those albums have reached number one on the Top Country Albums charts, with his 1994 breakthrough album Not a Moment Too Soon being the top country album of 1994. In total, McGraw's albums have produced 65 singles, 25 of which have reached number one on the Hot Country Songs or Country Airplay charts. Three of these singles – "It's Your Love", "Just to See You Smile", and "Live Like You Were Dying" – were respectively the top country songs of 1997, 1998, and 2004 according to Billboard Year-End. He has also won three Grammy Awards, 14 Academy of Country Music awards, 11 Country Music Association (CMA) awards, 10 American Music Awards, and three People's Choice Awards. His Soul2Soul II Tour, which was done in partnership with his wife, Faith Hill, is one of the highest-grossing tours in country music history, and one of the top five among all genres of music. He has sold more than 80 million records worldwide, making him one of the best-selling music artists of all time.
S&P Global Inc. is an American publicly traded corporation headquartered in Manhattan, New York City. Its primary areas of business are financial information and analytics. It is the parent company of S&P Global Ratings, S&P Global Market Intelligence, S&P Global Mobility, S&P Global Engineering Solutions, S&P Global Sustainable1, and S&P Global Commodity Insights, CRISIL, and is the majority owner of the S&P Dow Jones Indices joint venture. "S&P" is a shortening of "Standard and Poor's".
The articular bone is part of the lower jaw of most vertebrates, including most jawed fish, amphibians, birds and various kinds of reptiles, as well as ancestral mammals.
Acanthodii or acanthodians is an extinct class of gnathostomes. They are currently considered to represent a paraphyletic grade of various fish lineages basal to extant Chondrichthyes, which includes living sharks, rays, and chimaeras. Acanthodians possess a mosaic of features shared with both osteichthyans and chondrichthyans. In general body shape, they were similar to modern sharks, but their epidermis was covered with tiny rhomboid platelets like the scales of holosteians.
Tabulata, commonly known as tabulate corals, are an order of extinct forms of coral. They are almost always colonial, forming colonies of individual hexagonal cells known as corallites defined by a skeleton of calcite, similar in appearance to a honeycomb. Adjacent cells are joined by small pores. Their distinguishing feature is their well-developed horizontal internal partitions (tabulae) within each cell, but reduced or absent vertical internal partitions. They are usually smaller than rugose corals, but vary considerably in shape, from flat to conical to spherical.
330 West 42nd Street, also known as the McGraw-Hill Building and formerly the GHI Building, is a 485-foot-tall (148 m), 33-story skyscraper in the Hell's Kitchen neighborhood of Manhattan in New York City. Designed by Raymond Hood and J. André Fouilhoux in a mixture of the International Style, Art Deco, and Art Moderne styles, the building was constructed from 1930 to 1931 and originally served as the headquarters of The McGraw-Hill Companies.
The Standard Code of Parliamentary Procedure is a book of rules of order. It is the second most popular parliamentary authority in the United States after Robert's Rules of Order. It was first published in 1950. Following the death of the original author in 1975, the third (1988) and fourth (2001) editions of this work were revised by a committee of the American Institute of Parliamentarians. In April 2012, a new book, entitled American Institute of Parliamentarians Standard Code of Parliamentary Procedure (AIPSC) was released, followed by a second edition in 2023.
The Eocrinoidea are an extinct class of echinoderms that lived between the Early Cambrian and Late Silurian periods. They are the earliest known group of stalked, arm-bearing echinoderms, and were the most common echinoderms during the Cambrian.
In some fishes, the palatoquadrate is the dorsal component of the mandibular arch, the ventral one being Meckel's cartilage. The palatoquadrate forms from splanchnocranium in various chordates including placoderms and acanthodians.
Athyridida is an order of Paleozoic brachiopods included in the Rhynchonellata, which makes up part of the articulate brachiopods.
Brochoadmones is an extinct genus of acanthodian from the Devonian of what is now Canada. It is the only genus in the suborder Brochoadmonoidei, whose relationship to other acanthodian orders remains currently in flux.
McGraw Hill is an American publishing company for educational content, software, and services for pre-K through postgraduate education. It is one of the "big three" educational publishers along with Houghton Mifflin Harcourt and Pearson Education. McGraw Hill also publishes reference and trade publications for the medical, business, and engineering professions. Formerly a division of The McGraw Hill Companies, McGraw Hill Education was divested and acquired by Apollo Global Management in March 2013 for $2.4 billion in cash. McGraw Hill was sold in 2021 to Platinum Equity for $4.5 billion.
Acanthodopsis is a genus of Acanthodian fish from the family Acanthodidae. It lived during the Carboniferous period. Acanthodopsis fossils have been discovered in Australia and England. The largest species could have reached up to 75 cm in length while others were much smaller.