Question: The dominant land plant species of the time were gymnosperms, which are vascular, cone-bearing, non-flowering plants such as conifers that produce seeds without a coating. This is opposed to the earth's current flora, in which the dominant land plants in terms of number of species are angiosperms. One particular plant genus, Ginkgo, is thought to have evolved at this time and is represented today by a single species, Ginkgo biloba. As well, the extant genus Sequoia is believed to have evolved in the Mesozoic.
Is there an answer to this question: What land species died out in this period?

Answer: unanswerable

Question: The setae ("hairs") of annelids project out from the epidermis to provide traction and other capabilities. The simplest are unjointed and form paired bundles near the top and bottom of each side of each segment. The parapodia ("limbs") of annelids that have them often bear more complex chetae at their tips for example jointed, comb-like or hooked. Chetae are made of moderately flexible -chitin and are formed by follicles, each of which has a chetoblast ("hair-forming") cell at the bottom and muscles that can extend or retract the cheta. The chetoblasts produce chetae by forming microvilli, fine hair-like extensions that increase the area available for secreting the cheta. When the cheta is complete, the microvilli withdraw into the chetoblast, leaving parallel tunnels that run almost the full length of the cheta. Hence annelids' chetae are structurally different from the setae ("bristles") of arthropods, which are made of the more rigid -chitin, have a single internal cavity, and are mounted on flexible joints in shallow pits in the cuticle.
Is there an answer to this question: What are parapodia against?

Answer: unanswerable

Question: Detroit and the rest of southeastern Michigan have a humid continental climate (Koppen Dfa) which is influenced by the Great Lakes; the city and close-in suburbs are part of USDA Hardiness zone 6b, with farther-out northern and western suburbs generally falling in zone 6a. Winters are cold, with moderate snowfall and temperatures not rising above freezing on an average 44 days annually, while dropping to or below 0 F (18 C) on an average 4.4 days a year; summers are warm to hot with temperatures exceeding 90 F (32 C) on 12 days. The warm season runs from May to September. The monthly daily mean temperature ranges from 25.6 F (3.6 C) in January to 73.6 F (23.1 C) in July. Official temperature extremes range from 105 F (41 C) on July 24, 1934 down to 21 F (29 C) on January 21, 1984; the record low maximum is 4 F (20 C) on January 19, 1994, while, conversely the record high minimum is 80 F (27 C) on August 1, 2006, the most recent of five occurrences. A decade or two may pass between readings of 100 F (38 C) or higher, which last occurred July 17, 2012. The average window for freezing temperatures is October 20 thru April 22, allowing a growing season of 180 days.
Is there an answer to this question: What body of water affects Detroit's climate?

Answer: Great Lakes

Question: Since annelids are soft-bodied, their fossils are rare mostly jaws and the mineralized tubes that some of the species secreted. Although some late Ediacaran fossils may represent annelids, the oldest known fossil that is identified with confidence comes from about 518 million years ago in the early Cambrian period. Fossils of most modern mobile polychaete groups appeared by the end of the Carboniferous, about 299 million years ago. Palaeontologists disagree about whether some body fossils from the mid Ordovician, about 472 to 461 million years ago, are the remains of oligochaetes, and the earliest indisputable fossils of the group appear in the Tertiary period, which began 65 million years ago.
Is there an answer to this question: What types of annelids disappeared 299 million years ago?

Answer:
unanswerable