| Makiyamaia decorata | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Superfamily: | Conoidea |
| Family: | Clavatulidae |
| Genus: | Makiyamaia |
| Species: | M. decorata |
| Binomial name | |
| Makiyamaia decorata Oleinik 1991 | |
Makiyamaia decorata is an extinct species of sea snail, a marine gastropod mollusc in the family Clavatulidae. [1]
Fossils of this species were found in Eocene deposits in the Lower Snatolskaya Formation, Russia (age range 48.6 to 37.2 Ma).
The Oligocene is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present. As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek ὀλίγος and καινός, and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period.
The Eocene–Oligocene extinction event, also called the Eocene-Oligocene transition or Grande Coupure, is the transition between the end of the Eocene and the beginning of the Oligocene, an extinction event and faunal turnover occurring between 33.9 and 33.4 million years ago marked by large-scale extinction and floral and faunal turnover. Most of the affected organisms were marine or aquatic in nature. They included the last of the ancient ungulates, the "condylarths".
Carcharias is a genus of mackerel sharks belonging to the family Odontaspididae. Once bearing many prehistoric species, all have gone extinct with the exception of the critically endangered sand tiger shark.
Tectonatica is a genus of sea snails, marine gastropod molluscs in the subfamily Naticinae of the family Naticidae, the moon snails.
Makiyamaia gravis is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae.
Makiyamaia cornulabrum is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae.
Makiyamaia mammillata is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae.
Conorbis is an extinct genus of sea snails, marine gastropod mollusks in the family Conorbidae.
Makiyamaia orthopleura is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae.
Makiyamaia is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae.
Cochlespira is a genus of sea snails, marine gastropod mollusks in the family Cochlespiridae.
Varicospira is a genus of sea snails, marine gastropod mollusks in the family Rostellariidae within the Stromboidea, the true conchs and their allies.
Ecphora is the common name for a group of extinct predatory marine gastropod mollusks within the family Muricidae, the rocks snails or murexes. The common name is based on the first officially described genus, Ecphora. The entire lineage of these ocenebrinid murexes are descended from the Eocene murex, Tritonopsis. Ecphoras were indigenous to the North American Eastern Seaboard, being found in marine strata from the Late Eocene until their extinction during the Pliocene. Many ecphora species are important index fossils.
The Bouldnor Formation is a geological formation in the Hampshire Basin of southern England. It is the youngest formation of the Solent Group and was deposited during the uppermost Eocene and lower Oligocene.
The Keasey Formation is a geologic formation in northwestern Oregon. It preserves fossils dating back to the Paleogene period.
Bathytoma cataphracta is an extinct species of sea snail, a marine gastropod mollusk in the family Borsoniidae.
Makiyamaia scalaria is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae.
Makiyamaia subdeclivis is a species of sea snail, a marine gastropod mollusc in the family Clavatulidae.
Eoconus sauridens is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae.
Cypraeorbis is an extinct genus of sea snails, marine gastropod mollusks in the subfamily Cypraeinae of the family Cypraeidae.
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