Jumara Dome, sponge meadows (Jurassic of India)

Where: Gujarat, India (23.7° N, 69.1° E: paleocoordinates 22.1° S, 33.1° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Patcham Formation, Late/Upper Bathonian (167.7 - 164.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore ramp; lithified wackestone and lithified marl

• sponge meadows in low energy, open marine environment below storm wave base, on a carbonate ramp; sponges did not form mounds
• well bedded wackestones, 5-20 cm thick, and softly weathering argillaceous marlstones

Size class: macrofossils

Primary reference: D. Mehl and F. T. Fürsich. 1997. Middle Jurassic Porifera from Kachchh, western India. Palaeontologische Zeitschrift 71:19-33 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93561: authorized by Wolfgang Kiessling, entered by Uta Merkel on 25.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Demospongiae
 Tetralithistida - Cylindrophymatidae
Melonella radiata Quenstedt 1858 demosponge
 Tetralithistida - Protetraclisidae
Rhizotetraclis plana Kolb 1910 demosponge
 Monalithistida - Vetulinidae
Jumarella astrorhiza n. gen. n. sp. Mehl and Fürsich 1997 demosponge
Mastosia rhytidodes n. sp. Mehl and Fürsich 1997 demosponge
 Spirosclerophorida - Cnemidiastridae
cf. Cnemidiastrum sp. Zittel 1878 demosponge
Cnemidiastrum stellatum Goldfuss 1826 demosponge
 Spirosclerophorida - Platychoniidae
Platychonia schlotheimi Goldfuss 1833 demosponge
 Spirosclerophorida - Discostromatidae
"Hyalotragos radiatum" = Pyrgochonia (Actinostrombus) radiata Goldfuss 1829 demosponge
Hyalotragos patella Goldfuss 1826 demosponge
Stromatoporoidea
 Stromatoporida - Stromatoporidae
Stromatopora dichotoma stromatoporoid sponge
Radicispongia
  -
Radicispongia kraspedophora n. sp. Mehl and Fürsich 1997
Hexactinellida
 Hexactinosa - Tretodictyidae
Hexactinella prisca n. sp. Mehl and Fürsich 1997 glass sponge
 Lychniscosa - Sporadopylidae
Sporadopyle obliqua Goldfuss 1826 glass sponge
Anthozoa
 Scleractinia - Montlivaltiidae
Isastrea propinqua Etallon 1864 stony coral
Montlivaltia sp. Lamouroux 1821 stony coral
 Scleractinia - Microsolenidae
Dimorpharaea stellans Gregory 1900 stony coral
Microsolena sp. Lamouroux 1821 stony coral
Bivalvia
 Pectinida - Dimyidae
Atreta sp. Etallon 1862 scallop
 Pectinida - Plicatulidae
 Pectinida - Limidae
 Ostreida - Palaeolophidae
Actinostreon gregareum Sowerby 1816 oyster
 Ostreida - Gryphaeidae
"Nanogyra nana" = Nanogyra (Nanogyra) nana Sowerby 1822 oyster
 Ostreida - Eligmidae
Eligmus rollandi Douvillé 1907 oyster
 Mytilida - Mytilidae
Arcomytilus laitmairensis de Loriol 1883 mussel
 Cardiida - Cardiidae
 Carditida - Astartidae
Opis (Trigonopis) sp. Munier-Chalmas 1887 clam
Rhynchonellata
 Rhynchonellida - Erymnariidae
 Rhynchonellida - Cyclothyrididae
 Terebratulida - Postepithyrididae
""Terebratula" katametopa" = Kutchithyris katametopa Kitchin 1900
Kutchithyris propinqua Kitchin 1900
 Terebratulida - Terebratulidae
"Terebratula" sp. Müller 1776
 Terebratulida - Eudesiidae
Stenolaemata
 Cyclostomata - Diastoporidae
"Berenicea" sp. Lamouroux 1821
Polychaeta
 Sabellida - Serpulidae
Dorsoserpula sp. Parsch 1956
Pentaserpula sp. Parsch 1956
 Serpulimorpha -
Cycloserpula sp. Parsch 1956
Insecta
 Neuroptera - Sisyridae
Neuropora sp. Khramov 2019 spongillafly
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Echinoidea
 Cidaroida - Rhabdocidaridae
Rhabdocidaris sp. Desor 1855 pencil urchin