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Megathiris

Rhynchonellata - Terebratulida - Megathyrididae

Synonyms
  • Argiope was named by Eudes-Deslongchamps (1842). It is extant.

    It was replaced with Megathiris by Clapham (2015).
Synonymy list
YearName and author
1842Argiope Eudes-Deslongchamps
1847Megathiris d'Orbigny
2002Megathyris Sepkoski
2006Megathiris Williams et al. p. 2217
2017Megathiris Bitner and Müller p. 216

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
RankNameAuthor
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderTerebratulida
suborderTerebratellidinaMuir-Wood 1955
superfamilyMegathyridoideaDall 1870
familyMegathyrididaeDall 1870
genusMegathirisd'Orbigny 1847

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. Megathiris d'Orbigny 1847
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†Megathiris bidiscoidea Simon 1992
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Invalid names: Argiope multicostata Bosquet 1864 [synonym], Megathiris decollata Chemnitz 1785 [replaced]
Megathyris barroisi Shulgin 1884
Megathyris capensis Jackson 1952
Invalid names: Argiope Eudes-Deslongchamps 1842 [replaced]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
height52.882.103.403.000.497
shell height81.961.603.101.700.590

Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryf
Attached: yesf
Life habit: low-level epifaunalf
Diet: suspension feederf
Vision: blindc
Created: 2018-11-10 17:30:31
Modified: 2018-11-10 17:30:31
Source: f = family, c = class, p = phylum, uc = unranked clade
References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range

Maximum range based only on fossils: base of the Late/Upper Maastrichtian to the top of the Calabrian or 70.60000 to 0.77400 Ma
Minimum age of oldest fossil (stem group age): 66.0 Ma

Collections (73 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Maastrichtian70.6 - 66.0Belgium M. bidiscoidea (170050 170056 170064 170066 170082 170083 170084)
Late/Upper Maastrichtian70.6 - 66.0Belgium M. bidiscoidea (170077)
Danian66.0 - 61.6Denmark Argiope scabricula, Argiope faxensis, Argiope posselti (89866)
Paleocene66.0 - 56.0Germany Argiope sp. (3111)
Thanetian59.2 - 56.0Spain M. sp. (171727)
Ypresian56.0 - 47.8Austria M. detruncata (133103)
Priabonian38.0 - 33.9Ukraine M. detruncata (186786)
Priabonian38.0 - 33.9Germany (Bavaria) Megathyris decollata (10963)
Priabonian38.0 - 33.9Austria M. detruncata (233275 233277 233287)
Priabonian38.0 - 33.9Hungary M. detruncata (161770)
Rupelian33.9 - 28.1Germany M. detruncata (233116 233119 233120)
Chattian28.1 - 23.03France (Aquitaine) M. detruncata (88795)
Chattian28.1 - 23.03France M. detruncata (152688 152695)
Chattian28.1 - 23.03France (Landes) M. detruncata (152689 152694)
Burdigalian20.44 - 15.97Germany M. detruncata (188985 190204 190205)
Langhian15.97 - 13.82Austria M. detruncata (153681)
Middle Miocene15.97 - 11.608Poland Megathyris sp. (70539)
Serravallian13.82 - 11.62Cyprus Argiope detruncata (71882)
Badenian13.65 - 12.7Czech Republic M. detruncata (152286 233294 233295)
Badenian13.65 - 12.7Austria M. detruncata (152564)
Badenian13.65 - 12.7Poland M. detruncata (51687 159682 159683 159684 159686 159687 159688 159689 194953 233128 233132 233133 233136 233138 233143 233144) M. detruncta (147574) Megathyris sp. (37370 37371)
Badenian13.65 - 12.7Romania Megathyris detruncata (72246)
Badenian13.65 - 12.7Hungary M. detruncata (155785)
Badenian13.65 - 12.7Bulgaria M. detruncata (175794)
Tortonian11.62 - 7.246Italy M. detruncata (186801)
Messinian7.246 - 5.333Morocco Megathyris sp. (34723)
Messinian7.246 - 5.333Malta Megathyris sp. (140979 141544)
Zanclean5.333 - 3.6Spain M. detruncata (190899 190902 190904 190906)
Piacenzian3.6 - 2.588Algeria M. detruncata (152660)
Gelasian2.588 - 1.806Italy M. detruncata (187570)
Gelasian2.588 - 1.806Greece M. detruncata (153679)
Calabrian1.8 - 0.774Italy M. detruncata (187566 187734)
Calabrian1.8 - 0.774Italy (Apulia) M. detruncata (97591 187441)