Английская Википедия:Hosselkus Limestone

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Шаблон:Short description Шаблон:Infobox rockunit

The Hosselkus Limestone is an Upper Triassic fossiliferous marine micritic limestone formation that outcrops in Plumas and Shasta Counties, California.[1] It is known for its invertebrate fauna, most notably the many species of shelled cephalopods.

Geology

Файл:Hosselkus limestone fauna.jpg
Fauna of the Hosselkus Limestone

The geologic column of the nearby Taylorsville region shows the Hosselkus Limestone as 140 ft thick and of Late Triassic (early Karnian) age. It is well exposed near the Cosmopolitan mine on the divide between the Genesee Valley and Hosselkus Creek. It has been recognized at numerous outcrops between Spanish Ranch and Prattville and northwestward beyond Pit River in the Klamath Mountains, and is considered to be younger than the Swearinger slates and older than the Trail beds. It contains numerous Arcestes and abundant pentagonal crinoid stems which indicate it is of Late Triassic age.[2]

Paleofauna

Over 208 described species of invertebrates have been found in the Hosselkus Limestone and nearby Brock Mountain.[3] These species include shellfish, nautilus, snails, and ammonites. Many of these species can be also found in the Mediterranean region, which shows a much closer connection between the American and Mediterranean regions. The Great Basin sea was then the western end of the ancient Tethys, of which the Indian sea was the eastern limit.

A noteworthy feature of this fauna is the abundance of Trachyceras in the area, as in the Mediterranean that genus had dissipated before the advent of the Tropites fauna.[3] This area is rather sharply separated into two faunal subzones. The lower, the Trachyceras subzone, carries an abundance of Trachyceras, Tropites, Paratropites, and Clionites. The upper subzone carries a few survivors of the Tropites group, Juvavites, Gonionotites, Metasibrites, and Arcestes. Discotropites, Sagenites, and the nautiloids occur in nearly equal numbers in the two subzones.[3]

Vertebrates

Шаблон:Paleobiota-key-compact

Vertebrates of the Hosselkus Limestone
Genus Species Location Member Abundance Notes Images

Merriamia[4]

M. zitteli[4]

An extinct genus of ichthyosaur. Now referred to as Toretocnemus zitteli.

Nectosaurus[5]

N. halius[6]

A genus of marine diapsid reptile.
Файл:Thalattosauridae.jpg
Thalattosaurus and Nectosaurus

Shastasaurus[7]

S. alexandrae[8]

Now referred to S. pacificus.[9]

Файл:Shastasaurus2DB.jpg
Shastasaurus

S. altispinus[8]

Now referred to S. pacificus.[9]

S. careyi[9]

Remains formerly attributed to S. careyi are now thought to be from an indeterminate species of Shonisaurus.[10]

S. osmonti[8]

Now referred to S. pacificus.[9]

S. pacificus[8]

An extinct genus of ichthyosaur.

Shonisaurus[10]

Indeterminate.[10]

An extinct genus of ichthyosaur. Now known as Shonisaurus popularis.
Файл:Shonisaurus popularisDB.jpg
Shonisaurus

Thalattosaurus[4]

T. alexandrae[4]

An extinct genus of marine reptile.
Файл:Thalattosaurus alexandrae life restoration.jpg
Thalattosaurus

T. perrini?[4]

Type skull of T. perrini has not been located.

T. shastensis?[4]

Remains formerly attributed to T. shastensis are now thought to be from an indeterminate species.

Toretocnemus[11]

T. californicus[8]

An extinct genus of ichthyosaur.

T. perrini[11]

An extinct genus of ichthyosaur.

Invertebrates

Шаблон:Paleobiota-key-compact

Invertebrates of the Hosselkus Limestone[3]
Genus Species Location Member Abundance Notes Images

Tropites

T. armatus

A genus of extinct cephalopods.

T. arthaberi

A genus of extinct cephalopods.
T. brockensis A genus of extinct cephalopods.
T. dieneri A genus of extinct cephalopods.
T. dilleri A genus of extinct cephalopods.
T. discobullatus A genus of extinct cephalopods.
T. fusobullatus A genus of extinct cephalopods.
T. hessi A genus of extinct cephalopods.
T. johnsoni A genus of extinct cephalopods.
T. keili A genus of extinct cephalopods.
T. kellyi A genus of extinct cephalopods.
T. kokeni A genus of extinct cephalopods.
T. mojsvarensis A genus of extinct cephalopods.
T. morani A genus of extinct cephalopods.
T. morloti A genus of extinct cephalopods.
T. occidentalis A genus of extinct cephalopods.
T. phillippi A genus of extinct cephalopods.
T. reticulatus A genus of extinct cephalopods.
T. rotatorius A genus of extinct cephalopods.
T. rothpletzi A genus of extinct cephalopods.
T. schellwienesis A genus of extinct cephalopods.
T. shastensis A genus of extinct cephalopods.
T. shearnsi A genus of extinct cephalopods.
T. subbullatus A genus of extinct cephalopods.
T. torquillus A genus of extinct cephalopods.
T. traski A genus of extinct cephalopods.
T. urensis A genus of extinct cephalopods.
T. welleri A genus of extinct cephalopods.
T. wodani A genus of extinct cephalopods.
Anatropites A. hauchecornei A genus in the ceratitid family Tropitidae.
Mierotropites M. tubercularis A genus of extinct cephalopods. Sometimes referred to as Tropites.
Margarites M. jokelyi A genus of extinct cephalopods. Today referred as Hoplotropites jokelyi.
M. senilis A genus of extinct cephalopods. Today referred as Hoplotropites.
M. septeotrionalis A genus of extinct cephalopods. Today referred as Hoplotropites.
Discotropites D. davisi A genus in the ceratitid family Tropitidae.
D. empedoelis A genus in the ceratitid family Tropitidae.
D. formosus A genus in the ceratitid family Tropitidae.
D. gemmellaroi A genus in the ceratitid family Tropitidae.
D. laurae A genus in the ceratitid family Tropitidae.
D. lineatus A genus in the ceratitid family Tropitidae.
D. mojsvarensis A genus in the ceratitid family Tropitidae.
D. sandlingensis A genus in the ceratitid family Tropitidae.
D. sengeli A genus in the ceratitid family Tropitidae.
D. theron A genus in the ceratitid family Tropitidae.
Paratropites D. arnoldi A genus in the ceratitid family Tropitidae.
D. antiselli A genus in the ceratitid family Tropitidae.
D. dittmari A genus in the ceratitid family Tropitidae.
D. gabbi A genus in the ceratitid family Tropitidae.
D. graeilis A genus in the ceratitid family Tropitidae.
D. sellai A genus in the ceratitid family Tropitidae.
Gymnotropites G. americanus A genus in the ceratitid family Tropitidae.
G. californicus A genus in the ceratitid family Tropitidae.
G. laevis A genus in the ceratitid family Tropitidae.
G. rotundus A genus in the ceratitid family Tropitidae.
G. yatesi A genus in the ceratitid family Tropitidae.
Paulotropites P. colei A genus in the ceratitid family Tropitidae.
P. shastensis A genus in the ceratitid family Tropitidae.
Tornquistites T. evolutus A genus in the ceratitid family Tropitidae.
T. obolinus A genus in the ceratitid family Tropitidae.
Homerites H. semiglobosus A genus of small, involute, globase fossil ceratitids.
Jovites J. pacificus A genus in the ceratitid family Tropitidae.
Bacchites B. baccus A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
B. pinguis A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
B. sphaericus A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
Leconteiceras L. californicum A genus of extinct ammonoid cephalopods belonging to the clionitidae family.
L. occidentale A genus of extinct ammonoid cephalopods belonging to the clionitidae family.
Celtites C. steindachneri A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
Tropiceltites T. caducucs A genus of extinct ammonoid cephalopods belonging to the tropiceltitidae family.
Sagenites S. dickersoni A genus of extinct ammonoid cephalopods belonging to the haloritidae family.
S. erinaceus A genus of extinct ammonoid cephalopods belonging to the haloritidae family.
S. herbiehi A genus of extinct ammonoid cephalopods belonging to the haloritidae family.
S. shastensis A genus of extinct ammonoid cephalopods belonging to the haloritidae family.
Juvavites J. adalberti A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. brockensis A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. damesi A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. edgari A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. externiplicatus A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. intermittens A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. kellyi A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. knowitoni A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. konninki A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. mendenhalli A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. obsoletus A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. shastensis A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. subintermittens A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. subinterruptus A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
J. strongi A genus of extinct ammonoid cephalopods belonging to the juvavitidae family.
Gonionotites G. byatti A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
G. northi A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
Metasibirites M. brockensis A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. coei A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. frechi A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. gracilis A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. modestus A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. mojsvareusis A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. parvus A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. pusillus A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. pygmaeus A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
M. shastensis A genus of extinct ammonoid cephalopods belonging to the metasibiritidae family.
Arcestes A. carpenteri A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
Файл:Arcestes.jpg
Arcestes
A. pacificus A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
A. shastensis A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
A. traski A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
A. whitneyi A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
A. winnemae A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
Paraganides P. califoraieus A genus of extinct ammonoid cephalopods.
Dieneria D. arthaberi A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
Fremontites F. ashleyi A genus of extinct ammonoid cephalopods.
Hauerites H. lawsoni A genus of extinct ammonoid cephalopods belonging to the tibetitidae family.
Klamathites K. kellyi A genus of extinct ammonoid cephalopods.
K. schueuerti A genus of extinct ammonoid cephalopods.
Pinacoceras P. rex A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
Discophyllites D. patens A genus of discoidal, generally evolute Phylloceratina.
Sirentes S. lawsoni
Sandlingites S. andersoni A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
S. oribasus A genus of extinct ammonoid cephalopods belonging to the ceratitid family.
Trachycereas T. beckeri
T. californicum
T. leeontei
T. lindgreni
T. madisonense
T. shastense
Clionites C. americus A genus of the clydonitacean family Clionitidae.
C. californicus A genus of the clydonitacean family Clionitidae.
C. careyi A genus of the clydonitacean family Clionitidae.
C. compactus A genus of the clydonitacean family Clionitidae.
C. compressus A genus of the clydonitacean family Clionitidae.
C. evolutus A genus of the clydonitacean family Clionitidae.
C. fairbanksi A genus of the clydonitacean family Clionitidae.
C. merriami A genus of the clydonitacean family Clionitidae.
C. minutus A genus of the clydonitacean family Clionitidae.
C. nanus A genus of the clydonitacean family Clionitidae.
C. osmonti A genus of the clydonitacean family Clionitidae.
C. robustus A genus of the clydonitacean family Clionitidae.
C. rugosus A genus of the clydonitacean family Clionitidae.
C. stantoni A genus of the clydonitacean family Clionitidae.
C. tornquisti A genus of the clydonitacean family Clionitidae.
C. whitneyi A genus of the clydonitacean family Clionitidae.
Metatirolites M. foliaceus A genus of extinct ammonoid cephalopods belonging to the ussuritidae family.
M. quadrangulus A genus of extinct ammonoid cephalopods belonging to the ussuritidae family.
M. subpygmaeus A genus of extinct ammonoid cephalopods belonging to the ussuritidae family.
Thisbites T. uhligi A genus of extinct ammonoid cephalopods belonging to the thisbitidae family.
Choristoceras C. kellyi A genus of extinct ammonoid cephalopods belonging to the choristoceratidae family.
C. klamathease A genus of extinct ammonoid cephalopods belonging to the choristoceratidae family.
Arpadites A. gabbi A genus of Ceratitids in the family arpaditida.
A. kingi A genus of Ceratitids in the family arpaditida.
Atractites A. drakei A genus of Ceratitids in the family xiphoteuthididae.
A. philippii A genus of Ceratitids in the family xiphoteuthididae.
Dietyoconites D. americanus
Proclydonautilus P. hessi A genus of the clydonitacean family Clionitidae.
P. sauperi A genus of the clydonitacean family Clionitidae.
P. spirolobus A genus of the clydonitacean family Clionitidae.
P. stantoni A genus of the clydonitacean family Clionitidae.
P. triadieus A genus of the clydonitacean family Clionitidae.
Oxynautius O. acutus A genus of the clydonitacean family syringonautilidae.
Gryptoceras G. cooperi
Mojsvaroceras M. turneri A genus of Ceratitids in the family Tainoceratidae.
Cosmonautilus C. dilleri A genus of cephalopods included in the nautilid family Clydonautilidae.
C. hersheyi A genus of cephalopods included in the nautilid family Clydonautilidae.
C. pacificus A genus of cephalopods included in the nautilid family Clydonautilidae.
C. shastensis A genus of cephalopods included in the nautilid family Clydonautilidae.
Halobia H. cordillerana A genus of cephalopods included in the nautilid family Halobiidae.
H. austriaca A genus of cephalopods included in the nautilid family Halobiidae.
H. gigantia A genus of cephalopods included in the nautilid family Halobiidae.
H. ornatissima A genus of cephalopods included in the nautilid family Halobiidae.
H. rugosa A genus of cephalopods included in the nautilid family Halobiidae.
H. superba A genus of cephalopods included in the nautilid family Halobiidae.
Avicula A. soperi A genus of molluscs in the family Pteriidae.
Gervilleia G. shastensis A genus of molluscs in the family Bakevelliidae.
Pecten P. sheddi A genus of large scallops or saltwater clams, marine bivalve mollusks in the family Pectinidae.
Файл:Pecten maximus Pilgermuschel.jpg
Pecten (bivalve)
Lima L. kimballi A genus of molluscs in the family Limidae.
Dimyodon D. storrsi A genus of molluscs in the family Dimyidae.
Pachycardia P. digglesi A genus of molluscs.
Cardita C. jenkinsi A genus of marine bivalve molluscs, in the family Carditidae.
Myophoria M. brockensis An extinct genus of bivalve mollusk from Europe belonging to the family Myophoriidae.
Файл:Myophoriidae - Myophoria lineata.JPG
Myophoria
Mytilus M. ursensis A genus of marine bivalve molluscs, in the family Mytilidae.
Файл:Miesmuscheln Mytilus 1.jpg
Mytilus
Posidonia P. jacksoni An extinct genus of Ostreoidean bivalves.
P. madisoniensis An extinct genus of Ostreoidean bivalves.
Anoplophors A. shastensis
Unicardium U. gleimi A genus of marine bivalve molluscs, in the family Mactromyidae.
Worthenia W. klamathensis A genus of fossil sea snails, an extinct marine gastropod.
Collonia C. occidentalis A genus of small sea snails with calcareous opercula, marine gastropod mollusks in the family Colloniidae.
C. obesa A genus of small sea snails with calcareous opercula, marine gastropod mollusks in the family Colloniidae.
Patella P. sheehani A genus of sea snails with gills, typical true limpets, marine gastropod mollusks in the family Patellidae.
Файл:Patella gomesii 002.jpg
Patella
P. stuarti A genus of sea snails with gills, typical true limpets, marine gastropod mollusks in the family Patellidae.
Capulus C. silverthorni A genus of small sea snails, marine gastropod mollusks in the family Capulidae
Файл:Capulus ungaricus 001.jpg
Capulus
Omphaloptychia O. shastensis A genus of fossil sea snails, in the family Coelostylinidae.
Dielasma D. julicum A genus of extinct brachiopods, or lamp shells.
Terebratula T. pyriformis A modern genus of brachiopod with a fossil record dating back to the Late Devonian.
Файл:Terebratula maugerii Boni, 1933.JPG
Terebratula
Spiriferina S. coreyi An extinct genus of brachiopods.
Файл:Liospiriferina rostrata Noir.jpg
Spiriferina
Spirigera S. milesi An extinct species of brachiopods.
Rhynchonella R. howardi An extinct genus of brachiopod, from the family Rhynchonellidae.
Файл:Rhynchonellidae - Rhynchonella species.JPG
Rhynchonella
R. richardsoni An extinct genus of brachiopod, from the family Rhynchonellidae.
R. winnemae An extinct genus of brachiopod, from the family Rhynchonellidae.
Isocrinus I. californicus An extinct species of feather star.
Файл:Isocrinus nicoleti Encrinite Mt Carmel.jpg
Isocrinus

Plants and Fungi

Шаблон:Paleobiota-key-compact

Flora of the Hosselkus Limestone[3]
Genus Species Location Member Abundance Notes Images
Polycyclus P. henseli A genus of fungi in the family Parmulariaceae.
P. major A genus of fungi in the family Parmulariaceae.
P. nodifer A genus of fungi in the family Parmulariaceae.

References

Шаблон:Portal Шаблон:Reflist

External links

  1. Шаблон:Cite journal
  2. Шаблон:Cite journal
  3. 3,0 3,1 3,2 3,3 3,4 Шаблон:Cite book
  4. 4,0 4,1 4,2 4,3 4,4 4,5 "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) p. 267
  5. "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) pp. 265-267
  6. "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) pp. 266-267
  7. "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) pp. 267-270
  8. 8,0 8,1 8,2 8,3 8,4 "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) p. 270
  9. 9,0 9,1 9,2 9,3 "4: The Marine Reptiles; Triassic Ichthyosaurs; Shastasauria," in Hilton (2003) p. 88.
  10. 10,0 10,1 10,2 "4: The Marine Reptiles; Triassic Ichthyosaurs; Shastasauria," in Hilton (2003) p. 88. Misspelled as "Shonosaurus" in "Appendix: Summary of the Mesozoic Reptilian Fossils of California," Hilton (2003) p. 270
  11. 11,0 11,1 "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) p. 270-271